Lewenswetenskap: November Vraestel 2 Mengsel

Which trophic level occupies the top of the pyramid?

What does the Pyramid of Numbers display?

How do primary consumers compare to producers in terms of number?

What contributes to the stability of ecosystems according to the text?

What impact can removing a hyena from the ecosystem have?

Which pyramid typically shows a clear, consistent decrease in energy as one moves up?

What is the primary function of nutrient cycles?

Which process is responsible for water vaporizing mainly from the oceans?

What is the function of photosynthesis in the oxygen cycle?

What role does combustion play in the carbon cycle?

Which key process converts atmospheric nitrogen into ammonia or nitrates?

In the water cycle, what term reflects the interconnected nature of evaporation and transpiration?

What do decomposing organisms release back into the atmosphere in the carbon cycle?

Which process involves plants absorbing ammonia and nitrates from the soil in the nitrogen cycle?

What is the combined term for evaporation and transpiration in the water cycle?

Which cycle is essential for the synthesis of amino acids and nucleic acids?

What type of biodiversity encompasses the variety of life forms on Earth?

Which type of diversity enables the adaptation of a species to changing environmental conditions?

What refers to a group of similar organisms capable of interbreeding to produce fertile offspring?

Which region hosts 10% of the planet's plant species despite being relatively small in area?

What is the estimated annual contribution of ecotourism to South Africa's economy?

How does ecotourism contribute to community development in South Africa?

What is essential for visitors to South Africa to engage in to minimize their environmental and cultural impact?

What do national parks and protected areas in South Africa aim to minimize?

Which type of diversity refers to the variations in genes within a single species?

What aspect of South Africa positions it as one of the world's most biodiverse regions?

What is the primary driver of the ongoing sixth mass extinction?

Which of the following is NOT a human-induced factor contributing to the sixth mass extinction?

What sets the ongoing sixth extinction apart from previous mass extinctions?

Which of the following is NOT a result of the anthropogenic effect?

What is the common impact of human activities on Earth’s biological diversity?

Which factor plays the most significant role in causing the ongoing sixth mass extinction?

Which era is often referred to as the 'Age of Reptiles'?

What major extinction event ended the reign of the dinosaurs?

What is the approximate percentage of marine species lost in the Ordovician-Silurian Extinction?

Which theory suggests that Homo sapiens originated in Africa and spread to other parts of the world?

What major event allowed dinosaurs to dominate the Earth's ecosystems?

Which extraterrestrial theory of mass extinctions involves massive impacts throwing up dust and debris?

What was the nickname given to the Permian-Triassic Extinction due to its severity?

Which era is characterized by the rapid evolution and diversification of mammals?

What event paved the way for mammals to become the dominant terrestrial vertebrates?

Which era saw the disappearance of 50% of Earth's species?

Which kingdom includes unicellular, prokaryotic organisms?

Who proposed the Protista kingdom and expanded the classification system to a five-kingdom model?

Which scientist introduced modifications towards a binomial system of naming organisms?

Which kingdom includes organisms with a chitin cell wall and reproduce through spore formation?

Who recognized the distinction between eukaryotes and prokaryotes and proposed a four-kingdom model?

What is the classification hierarchy sequence that reflects evolutionary relationships?

Which kingdom consists of multicellular, autotrophic organisms with cellulose cell walls?

Who proposed the binomial nomenclature system for naming organisms?

Which kingdom includes eukaryotic organisms that can be unicellular or simple multicellular?

Which system expanded on earlier classification methods and integrated modern genetic and evolutionary concepts?

Why is South Africa considered a biodiversity hotspot?

Which region in South Africa is mentioned as a critical biodiversity hotspot?

What poses significant threats to biodiversity according to the text?

How many bird species are mentioned in the text to be in South Africa?

What are indigenous species in South Africa?

Why is conservation of biodiversity vital according to the text?

What is taxonomy?

What is a challenge highlighted in the classification task using television programs?

What type of categories are created under Entertainment in the TV program classification example?

Why is biological classification not arbitrary?

Approximately how long ago did the first life forms, known as Archaea, emerge on Earth?

What is the theory that suggests continents once formed a single landmass called Pangea?

What major development led to the oxygenation of the atmosphere around 3.5 billion years ago?

During which Eon did life first begin to flourish on Earth in the form of unicellular organisms?

When did the first multicellular organisms appear on Earth?

Which event in Earth's history marks the period of rapid diversification known as the Cambrian Explosion?

What type of organisms evolved around 3 billion years ago and played a crucial role in transforming the Earth's atmosphere?

Which dating method determines the age of fossils based on their placement in sedimentary rock layers?

Algae, the precursors to plants, first appeared approximately how many years ago?

By about 450 million years ago, what evolutionary step was taken by the first true plants?

What significant event is associated with the Cambrian Period in Earth's history?

Which era encompasses the emergence of primitive plants, insects, amphibians, and the first appearance of fish?

What core component distinguishes eukaryotic cells from prokaryotic cells?

What caused the largest mass extinction in Earth's history at the end of the Paleozoic Era?

What type of cells emerged around 1.9 billion years ago, containing a nucleus and other organelles?

The Five Kingdom System is essential for understanding biological diversity and serves as a framework in which fields?

What is considered one of the earliest evidences of life, formed by communities of bacteria and sediment?

What tool aids in the classification of organisms by presenting two mutually exclusive choices at each step?

Which significant biological advancement occurred during the Proterozoic Eon?

What evidence is critical for understanding the history of life and provides information about the past organisms?

Which trophic level occupies the top of the pyramid?

Which pyramid displays the total mass of living material at each trophic level?

What will likely happen if a hyena is removed from the ecosystem?

What is the main reason tertiary consumers are least in number in an ecosystem?

Which term describes a food web's ability to better withstand changes?

What does the Pyramid of Energy represent about energy at each level?

What is the primary function of photosynthesis in the carbon cycle?

How is water returned to Earth in the water cycle?

What is the primary role of nitrogen fixation in the nitrogen cycle?

Which process involves the conversion of ammonia to nitrates in the nitrogen cycle?

What is the significant outcome of transpiration in the water cycle?

In the oxygen cycle, what is the purpose of respiration within living organisms?

Why is decomposition important in the carbon cycle?

What contributes to the flow and recycling of organic and inorganic substances in ecosystems?

Which of the following describes the importance of nutrient cycles?

How does the water cycle influence plant growth?

What does species diversity refer to in the context of biodiversity?

Which type of diversity enables a species to adapt to changing environmental conditions?

What is the key function of an organism's gene pool in genetic diversity?

How does ecological diversity contribute to biodiversity?

What is the primary role of South Africa's national parks and protected areas?

Why is genetic diversity crucial for species survival?

What effect does engaging in responsible ecotourism practices have on South Africa's resources?

Why are South Africa's UNESCO World Heritage Sites significant?

How do ecosystems vary within a geographical region according to ecological diversity?

In the context of biodiversity, what is the significance of the Cape Floral Region in South Africa?

Which scientist introduced modifications towards a binomial system in taxonomy?

What did Linnaeus develop to enhance precision and universality in the classification system?

In the five-kingdom system, which scientist proposed the Protista kingdom?

Which kingdom includes organisms that possess both sexual and asexual reproduction methods and have cells with a cellulose wall?

What distinguishes Kingdom Fungi in the five-kingdom system based on their classification?

What cellular characteristic distinguishes Kingdom Monera in the five-kingdom system?

Which two components primarily aid in precise identification of organisms according to the text?

What distinguished Ernst Haeckel's proposal for the Protista kingdom in the five-kingdom system?

What aspect predominantly characterizes Kingdom Animalia in comparison to other kingdoms?

What is the fundamental difference between Kingdom Monera and Kingdom Protista in the five-kingdom system?

What is the purpose of classifying organisms according to the text?

Which of the following is a critical component for biodiversity in South Africa?

How do indigenous species differ from endemic species?

What challenges are typically faced in the classification of organisms?

In what way does the hierarchical classification of organisms help in understanding biological diversity?

What aids in creating a systematic process of classification for organisms?

What makes South Africa a critical biodiversity hotspot?

How does classification in biology differ from categorization in television programs?

Why are conservation efforts in biodiversity hotspots vital?

What is the primary focus of scientific research underlying the biological classification system?

What is primarily driving the ongoing sixth mass extinction according to scientific consensus?

Which of the following is a key factor contributing to the current sixth mass extinction that is NOT mentioned in the text?

How do astronomers differ from climate scientists in their views on the sixth mass extinction?

Which of the following is a distinguishing feature of the ongoing sixth mass extinction in comparison to previous extinctions?

How do mass extinctions differ from natural background extinction rates in species loss?

What is the main impact of human activities on Earth's biological diversity according to the text?

Approximately how long ago did the first life forms, primarily simple single-celled organisms known as Archaea, emerge?

What was the pivotal development around 3.5 billion years ago that led to the oxygenation of the atmosphere?

When did the more complex cells called eukaryotes, containing a nucleus and other organelles, evolve?

Around 1.7 billion years ago, what significant development led to the emergence of the first multicellular organisms?

Which event took place around 1.2 billion years ago and was pivotal for the first organisms to perform photosynthesis?

When did the first true plants with vascular systems appear on land?

Approximately 600 million years ago, which evolutionary event occurred during a period known as the Cambrian Explosion?

What is the function of the geological timescale in understanding the history of Earth and life?

What is a key characteristic of the geological timescale's 'Eras'?

Which major group of organisms is missing cell walls and photosynthetic pigments?

During the Archean Eon, what major event led to the transformation of Earth's atmosphere?

What era in Earth's history saw the occurrence of extreme glaciations known as 'Snowball Earth' episodes?

What marks a significant evolutionary milestone during the Cambrian Period?

Which dating method relies on the placement of fossils in sedimentary rock layers for determining their age?

What major biological advancement occurred during the Proterozoic Eon?

Which era ended with the largest mass extinction in Earth's history known as the Permian-Triassic Extinction Event?

What are stromatolites, which serve as early evidence of life on Earth?

Which era marks the formation of the Earth and the cooling of the planet's crust?

Which term describes the rapid diversification of life forms during the Cambrian Period?

What key process explains how traits that enhance survival and reproduction become more common in a population over generations?

What distinguishes the Mesozoic Era from the Cenozoic Era primarily?

Which mass extinction event resulted in the disappearance of approximately 50% of species and allowed dinosaurs to dominate?

What is believed to have been a significant factor in the Late Devonian Extinction that affected 75% of species?

Which important advancement in hominin evolution is associated with the lineage leading to modern humans?

What key factor might have contributed to the Cretaceous-Paleogene Extinction, leading to the demise of the dinosaurs?

Which theory suggests that Homo sapiens spread from Africa to other parts of the world, replacing or interbreeding with other hominin species?

What is the significant geological process associated with the Triassic-Jurassic Extinction event?

Approximately what percentage of marine species were lost in the Permian-Triassic Extinction, known as the 'Great Dying'?

The rapid evolution and diversification of mammals is a characteristic of which geological era?

What physical changes in habitats are believed to have contributed to the Ordovician-Silurian Extinction event?

Why do tertiary consumers occupy the top of the pyramid and are least in number?

What is the primary reason for having fewer secondary consumers compared to primary consumers?

Why does a food web provide a more realistic depiction of feeding relationships compared to a simple food chain?

In a pyramid of energy, why is there typically a clear decrease in energy content as one moves up the pyramid?

What impact is likely to occur if a hyena, acting as a scavenger and predator, is removed from an ecosystem?

What aspect of a food web contributes significantly to the stability of an ecosystem?

What is the primary driver of the ongoing sixth mass extinction according to the text?

In the context of biodiversity loss and environmental modifications, what is the distinction of the ongoing sixth extinction?

Which factor primarily contributes to species disappearance at a rate higher than natural background rates?

What characteristic differentiates mass extinctions from other extinction events?

How do human activities compare with astronomical impacts in driving mass extinctions?

Which of the following is a key component in the anthropogenic effect on biodiversity?

What process involving certain bacteria led to the oxygenation of Earth's atmosphere billions of years ago?

Approximately how many million years ago did the first multicellular organisms develop?

During which geological era did invertebrates first arise around 600 million years ago?

Which event approximately 450 million years ago marked the emergence of true plants with vascular systems to transport nutrients?

What type of cells contain a nucleus and other organelles, evolved approximately 1.9 billion years ago?

Around 525 million years ago, which significant event marked a period of rapid diversification known as the Cambrian Explosion?

What does the geological timescale primarily aim to understand?

What does the dichotomous key primarily aid in the classification of organisms based on?

What does the Five Kingdom System primarily provide a foundational framework for in biological sciences?

Which characteristic sets eukaryotic cells apart from prokaryotic cells?

What is the primary role of nitrogen fixation in the nitrogen cycle?

Which process is responsible for water vaporizing mainly from the oceans?

Why is South Africa considered a critical biodiversity hotspot?

What plays a significant role in maintaining the balance of essential elements within ecosystems?

What is a key function of the oxygen cycle in living organisms?

Which term refers to organisms that are naturally found in South Africa?

How does biodiversity contribute to ecosystem health according to the text?

What does the carbon cycle involve that aids in the formation of organic molecules?

Which event marks the period of rapid diversification known as the Cambrian Explosion?

What is taxonomy primarily focused on in the classification of organisms?

Where do plants absorb ammonia and nitrates from in the nitrogen cycle?

Why are conservation efforts in biodiversity hotspots like South Africa vital?

Why are ecotourism and historical tourism significant in South Africa?

What do biological classification systems rely on heavily for accurate categorization?

What major threat to biodiversity is highlighted in the passage?

What significance does the water cycle hold for life on Earth?

How are nitrogenous materials processed back into ammonia in the nitrogen cycle?

How do hierarchical classification systems help in understanding biological diversity?

What sets endemic species apart from indigenous species?

What is the primary purpose of classification in biology systems?

During the Proterozoic Eon, what significant biological advancement occurred?

What was the primary effect of the breakup of Pangea on organisms?

Which event marked the end of the Paleozoic Era?

What is the significance of stromatolites in understanding early life forms?

Which evolutionary milestone characterized the Cambrian Period?

What is a key mechanism driving the diversification of life forms on Earth?

Which era marked the emergence of the first self-replicating molecules?

What distinguishes the Archean Eon in terms of atmospheric composition?

What trait became more common in populations over generations due to natural selection?

What evidence supports the diverging path of life forms due to continental drift?

What defines a species in biology?

Why is genetic diversity important for species?

Which type of diversity refers to the variations in genes within a species?

What is the primary focus of ecological diversity?

Which aspect of biodiversity ensures the adaptation of species to changing environments?

What role does genetic diversity play in the survival of species?

How does ecological diversity differ from genetic diversity?

Why is understanding ecological diversity crucial for conservation efforts?

Which of the following is NOT a component of biodiversity?

What is the purpose of gene pools in species?

Which scientist introduced modifications towards a binomial system in classification?

What is the distinguishing characteristic of Kingdom Monera in the Five Kingdom System?

What significant contribution did Carl Linnaeus make to the classification system?

Which kingdom includes examples like Plasmodium, Amoeba, and Euglena?

Which kingdom primarily functions as decomposers?

What did Herbert Copeland propose that led to a four-kingdom model?

Why is the distinction between Prokaryotes and Eukaryotes significant in biology?

Who expanded the classification system into a five-kingdom model, recognizing the unique status of fungi?

What aspect of the Five Kingdom System is based on fundamental differences in cellular structure?

Which scientist developed binomial nomenclature, giving organisms two-part Latinized names reflecting their genus and species?

What is the most probable cause of the Late Devonian Extinction event?

What distinguishes the Triassic-Jurassic Extinction among the five mass extinctions?

What was the most likely impact of meteor impacts during mass extinctions?

How did the Cretaceous-Paleogene Extinction differ from other mass extinctions?

What is the primary reason for the Great Dying during the Permian-Triassic Extinction?

How did climate change contribute to the Triassic-Jurassic Extinction?

What environmental factor could have triggered the Late Devonian Extinction?

What could have been the primary cause of the Ordovician-Silurian Extinction?

What makes the Permian-Triassic Extinction stand out among the mass extinctions?

What differentiates the Cretaceous-Paleogene Extinction from the Triassic-Jurassic Extinction?

What is a key difference between an open and closed circulatory system?

What type of organisms primarily have open circulatory systems?

Which circulatory system is more common among vertebrates?

How does hemolymph move in an open circulatory system?

Which characteristic makes the open circulatory system less efficient compared to closed systems?

What allows for a more efficient and controlled flow of blood in a closed circulatory system?

What separates the open circulatory system from the closed system?

Which pathway limits the speed at which blood is pumped due to the presence of only one capillary bed during circulation?

Why is the separation of oxygenated and deoxygenated blood in the double circulatory system considered an advantage?

What factor enables the double circulatory system to achieve faster blood flow compared to the single circulatory system?

In what way does the lymphatic circulatory system complement the cardiovascular system?

What distinguishes fish circulation from human circulation in the context of oxygenation?

What enables the double circulatory system to support higher metabolic demands in larger animals?

Which feature contributes to the superiority of the closed circulatory system over the open system for more active animals?

What enables the pulmonary circuit to carry deoxygenated blood to the lungs for oxygenation?

What advantage does a heart with four chambers offer in the human double circulatory system?

What is the primary function of Oxygen in the atmosphere as discussed in the text?

Which component plays a significant role in protecting against harmful UV rays from the sun in the atmosphere?

What is the primary source of nutritional needs for plants and animals in the biosphere?

What role does the hydrosphere play in influencing global climate patterns according to the text?

Which term describes a specific area where living organisms interact with each other and their physical environment?

What distinguishes the lithosphere as mentioned in the text?

What characterizes a biome, as discussed in the text?

Which is the main gas used by plants during photosynthesis to produce oxygen?

What is the essential function of the biosphere according to the text?

Which process does the atmosphere support that converts light energy into chemical energy?

What trophic level receives about 1% of the energy originally captured by producers?

Which organisms convert solar energy into chemical energy through photosynthesis?

What are apex predators known as in the trophic levels hierarchy?

What is the function of primary consumers in an ecosystem?

Which trophic level serves as the basis of the food chain?

What percentage of the energy stored by producers do secondary consumers typically receive?

What is the primary function of the lymphatic system?

Which chamber of the heart is less muscular compared to the others?

How does the cardiovascular system efficiently distribute oxygen, nutrients, and hormones throughout the body?

What is the function of the Pericardium in the heart's external structure?

Which system plays a critical role in immune responses and fluid balance?

Why do the heart valves ensure unidirectional blood flow?

What is the key role of the lymph nodes within the lymphatic system?

What differentiates the lymphatic system from the cardiovascular system regarding fluid transport?

Which system removes bacteria, waste products, and excess water from tissues?

How does lymph from the lymphatic system reach the bloodstream?

Which process leads to soil erosion and altered climate due to deforestation?

Which biome is characterized by salt concentrations typically around 35 grams per liter?

What distinguishes wetlands from other freshwater biomes?

Which terrestrial biome has flora predominantly consisting of tall trees with a rich understory of plants?

In which biome would you expect to find sparse vegetation with adaptations to conserve water?

Which South African biome is known for its rich biodiversity and species adapted to fire and nutrient-poor soils?

Which biome is most likely to support a diverse array of large mammals and birds?

What distinguishes estuaries in terms of the water they contain?

Which factor primarily influences the predominant vegetation in terrestrial biomes?

What type of biome is likely to face extreme temperature variations and low rainfall?

During which phase of the cardiac cycle do both the atria and ventricles relax?

Which of the following factors does NOT influence the rate and rhythm of the heartbeat according to the text?

What causes Hypotension?

Which condition results from coronary arteries being obstructed by plaques?

What is the purpose of a pacemaker in remedying cardiovascular diseases?

What is the main function of the aorta in the cardiovascular system?

Which valve closes to prevent backflow of blood during Ventricular Systole?

What is a significant symptom of Hypertension?

How are heart transplants used in the context of cardiovascular diseases?

In the cardiac cycle, where do the tricuspid and bicuspid valves open to allow blood flow into the ventricles?

To which category of organisms do hyenas belong in the context of energy flow in ecosystems?

What role do leopards and snakes play in terms of the food chain?

What distinguishes hydrophytes in terms of their habitat adaptation?

What is the primary role of decomposers like fungi in ecosystems?

Which type of animal is likely to display physiological adaptations to conserve water effectively?

How do physiological adaptations in xerophytes like cacti help in their survival?

What is the primary role of plants in the context of energy flow in ecosystems?

In an ecosystem, what factor directly influences the survival and distribution of organisms?

Which group of organisms are vital in nutrient cycling due to their role in breaking down dead organic matter?

What distinguishes ecotourism from other forms of tourism?

How do consumers (heterotrophs) in ecosystems obtain their food?

What role do decomposers play in ecosystems?

Which factors are categorized as abiotic components in ecosystems?

What is the primary objective of studying a local ecosystem through investigative studies?

Which statement reflects an accurate correlation between ecotourism and economic benefits?

Why is community involvement highlighted as an ethical consideration in ecotourism?

Which characteristic defines producers (autotrophs) in ecosystems?

How can ecotourism contribute to the development of local infrastructure?

In what way do climatic factors influence ecosystems?

In which animals is an open circulatory system primarily found?

What allows for more efficient and controlled blood flow in a closed circulatory system?

Which circulatory system is less efficient due to the lack of directional flow and reliance on slow-moving hemolymph?

What differentiates an open circulatory system from a closed circulatory system?

Which type of animals typically have a closed circulatory system?

Which circulatory system is more suited for nutrient exchange and waste removal directly on organs?

What happens to a significant portion of energy as it flows through various trophic levels in an ecosystem?

Which organisms form the basis of the food chain in an ecosystem by converting solar energy into chemical energy?

What percentage of energy do secondary consumers, like lions and wolves, receive compared to the energy originally captured by the producers?

Which trophic level in an ecosystem consists of apex predators like eagles and sharks?

What is the main role of primary consumers like deer or rabbits in an ecosystem?

What do carnivores and omnivores, as secondary consumers, predominantly feed on in an ecosystem?

What is the biosphere primarily responsible for sustaining?

Which component of the atmosphere is crucial for the process of photosynthesis in plants?

How does the hydrosphere influence global climate patterns?

What is the lithosphere primarily a fundamental source of for terrestrial life?

What hierarchical level of ecological structure involves a specific role or function within an environment?

Which characteristic defines a biome as an area on Earth's surface with distinct climatic conditions?

What distinguishes an ecosystem from a community within the biosphere?

What serves as the natural environment where an organism resides?

In the context of ecological structures, what do populations represent?

What is the essential feature that distinguishes an organism from other levels of ecological structure within the biosphere?

In a single circulatory system, how many times does the heart pump blood during each complete circuit in fish?

What is the main limitation of a single circulatory system compared to a double circulatory system?

What allows for efficient oxygen supply in the double circulatory system of mammals and birds?

What defines the pulmonary circuit in the double circulatory pathway of advanced vertebrates?

In the human circulatory system, where does the blood go for oxygenation?

What essential function is performed by the cardiovascular system for cells in the body?

Which type of vertebrates demonstrate a double circulation pathway?

What enables a higher pressure and faster flow of blood in a double circulatory system compared to a single circulatory system?

Why does the separation of oxygenated and deoxygenated blood occur in a double circulatory system?

What is the primary purpose of the systemic circulation in the human circulatory system?

What role does lymph play in the body?

Which structure maintains the heart's position by anchoring it?

What differentiates the atria from the ventricles in the heart's internal structure?

How does the lymphatic system aid immune responses in the body?

Why is the separation of pulmonary and systemic circuits considered advantageous in the circulatory system?

In the cardiovascular system, what is the function of the Superior and Inferior Vena Cava?

What contributes to the efficient unidirectional blood flow in the heart?

Which vessels in the cardiovascular system transport blood to the lungs for oxygenation?

What is the significance of the lymph nodes in the lymphatic system?

What aids in pumping oxygenated blood from the lungs back to the heart in the cardiovascular system?

What is the primary function of decomposers in an ecosystem?

Which adjustments do xerophytes have to survive in arid environments?

What are the primary components responsible for supporting life in different biogeochemical cycles?

What role do omnivores play in an ecosystem?

Why is the Cape Floral Region in South Africa ecologically significant?

Which biome would most likely support an abundance of succulents?

How do primary consumers in an ecosystem primarily acquire energy?

What are the main atmospheric gases that facilitate life in ecosystems?

What distinguishes hyenas in an ecosystem from primary consumers?

Which factor most directly influences the types of vegetation that can thrive in a particular area?

What event occurs during Ventricular Systole in the cardiac cycle?

What distinguishes marine biomes from freshwater biomes?

What is a significant risk associated with Hypertension?

What is a key function of the SA node in controlling the heartbeat?

How are estuaries different from coral reefs in terms of salinity?

How does the heart rate respond to heightened demand for oxygen during increased cellular respiration?

What distinguishes the savanna biome from the desert biome?

Why is the fynbos biome considered unique?

What distinguishes Diastole in the cardiac cycle?

What can unusually low blood pressure, known as Hypotension, lead to?

Which biome is characterized by the presence of tall trees and a rich animal diversity?