Ecosystems and Food Chains Quiz
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Questions and Answers

What is a positive aspect of subsistence farming compared to commercial farming?

  • It generates more profit.
  • It uses more advanced technology.
  • It deforests the rainforest at a slower rate. (correct)
  • It requires more education.
  • Commercial farming is primarily focused on producing food for personal consumption.

    False

    Name one environmental impact of commercial farming in the Amazon rainforest.

    Deforestation

    Subsistence farming may not be sustainable in areas with less _____ education.

    <p>education</p> Signup and view all the answers

    Match the following practices with their impacts:

    <p>Selective logging = Reduces deforestation Slash and burn = Releases carbon dioxide Cattle ranching = Generates significant profit Trans Amazonian Highway = Facilitates exports but damages the environment</p> Signup and view all the answers

    What is one of the primary products sold by commercial farming in Brazil?

    <p>Beef</p> Signup and view all the answers

    The introduction of infrastructure such as the Trans Amazonian Highway has only positive effects.

    <p>False</p> Signup and view all the answers

    What contributes to the increase in cattle farming in Brazil, particularly regarding demand?

    <p>Increased demand for beef from wealthier countries like China</p> Signup and view all the answers

    What is a consequence of deforestation regarding medicine?

    <p>Loss of medicinal sources</p> Signup and view all the answers

    Deforestation can lead to an increase in greenhouse gas emissions.

    <p>True</p> Signup and view all the answers

    Which organism is a primary producer in the oak woodland ecosystem?

    <p>Oak tree</p> Signup and view all the answers

    Consumers in an ecosystem can obtain all required energy from their food.

    <p>False</p> Signup and view all the answers

    Name one indigenous tribe affected by deforestation.

    <p>Achuar tribe</p> Signup and view all the answers

    Deforestation can lead to the extinction of certain ___ due to the disruption of their food chain.

    <p>species</p> Signup and view all the answers

    Name a common decomposer found in an oak woodland habitat.

    <p>Mushroom</p> Signup and view all the answers

    Match the consequences of deforestation with their effects:

    <p>Loss of medicinal sources = Reduced healthcare options Increased greenhouse gases = Climate change Flooding risk = Endangered human safety Extinction of species = Disruption of ecology</p> Signup and view all the answers

    A food _____ shows the flow of energy from one organism to another.

    <p>chain</p> Signup and view all the answers

    What environmental issue is worsened by the decrease in trees?

    <p>Water cycle disruption</p> Signup and view all the answers

    What is the primary difference between a food chain and a food web?

    <p>Food webs represent multiple food chains.</p> Signup and view all the answers

    Deforestation can cause forest fires to occur more frequently.

    <p>True</p> Signup and view all the answers

    Nutrient cycling in an ecosystem is unidirectional.

    <p>False</p> Signup and view all the answers

    What natural disaster can be exacerbated by deforestation?

    <p>Floods</p> Signup and view all the answers

    Explain the role of consumers in an ecosystem.

    <p>Consumers eat producers or other consumers to gain energy.</p> Signup and view all the answers

    Which country produced around 300,000,000 metric tonnes of soy in 2018?

    <p>Brazil</p> Signup and view all the answers

    Soy is only used for feeding animals and not for human consumption.

    <p>False</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Producers = Organisms that convert sunlight and nutrients into organic molecules Consumers = Organisms that eat other organisms for energy Decomposers = Organisms that break down dead organic material Nutrient Cycling = The movement of organic and inorganic matter in an ecosystem</p> Signup and view all the answers

    What is one environmental impact of soy plantations?

    <p>Habitat destruction due to replacing trees with soy plantations.</p> Signup and view all the answers

    Logging adds up to ____% of deforestation in the Amazon Rainforest.

    <p>6</p> Signup and view all the answers

    Match the following logging impacts with their effects:

    <p>Soil compaction = Increased erosion Silt washing into rivers = Water quality deterioration Logging roads = Facilitation of further deforestation Creation of new jobs = Economic growth</p> Signup and view all the answers

    What is the primary goal of the technique mentioned for the Amazon rainforest?

    <p>To improve the effectiveness of CO2 absorption</p> Signup and view all the answers

    What is one of the main reasons for the increased demand for Brazilian beef?

    <p>Cheaper imports from Brazil</p> Signup and view all the answers

    Logging has no significant economic benefits according to the information.

    <p>False</p> Signup and view all the answers

    The Amazon rainforest absorbs more than 37% of global CO2 emissions.

    <p>True</p> Signup and view all the answers

    What major highway was created due to logging activities?

    <p>Trans-Amazonica Highway</p> Signup and view all the answers

    What innovative method is being used to plant seeds in hard-to-reach areas of the Amazon?

    <p>Drones</p> Signup and view all the answers

    Education helps teach children about the negative effects of __________.

    <p>deforestation</p> Signup and view all the answers

    What is one benefit of ecotourism in poor countries?

    <p>It allows for the protection of natural habitats.</p> Signup and view all the answers

    What is the average yearly temperature in temperate deciduous biomes?

    <p>50 degrees F</p> Signup and view all the answers

    The Coffee Sustainability Curriculum uses an interactive app to educate about rainforest management.

    <p>True</p> Signup and view all the answers

    Savannah biomes experience a rainy season during the winter months.

    <p>False</p> Signup and view all the answers

    What ecological impact do drones aim to facilitate in the Amazon rainforest?

    <p>Replanting and increasing tree coverage</p> Signup and view all the answers

    Name one natural factor that impacts temperate grassland biomes.

    <p>Tornadoes</p> Signup and view all the answers

    Match the following actions with their purposes:

    <p>Education = Increasing public awareness of tropical rainforests Ecotourism = Protecting natural habitats and promoting local economies Drones = Facilitating seed dropping in hard-to-reach areas Sustainability Curriculum = Training for managing rainforest resources</p> Signup and view all the answers

    The desert biome covers ______ of the Earth’s surface.

    <p>1/5th</p> Signup and view all the answers

    Which of the following biomes has a thin layer of acidic soil?

    <p>Taiga</p> Signup and view all the answers

    Match the biome with its characteristic:

    <p>Temperate Grassland = Home to large herbivores like bison Savannah = Characterized by trees and shrubs scattered Desert = Covers 1/5th of the Earth's surface Temperate Deciduous = Four distinct seasons with moderate temperature</p> Signup and view all the answers

    Temperate grasslands receive more precipitation than temperate deciduous biomes.

    <p>False</p> Signup and view all the answers

    In savannahs, vegetation commonly includes scrub, grasses, and occasional ______.

    <p>trees</p> Signup and view all the answers

    Study Notes

    Ecosystems

    • Ecosystems are natural systems with interconnected relationships.
    • Specific examples like UK oak woodlands are used to illustrate the concept.
    • Producers convert water, carbon dioxide, minerals, and sunlight into organic molecules.
    • Producers in oak woodlands include oak trees, consumed by insects and mammals.
    • Producers are primarily plants.
    • Consumers eat producers or other consumers to obtain energy.
    • Consumers need to eat lots to gain sufficient energy.
    • Consumers such as foxes and deer in an oak woodland help regulate populations.
    • Decomposers obtain energy by breaking down dead organic material.
    • Decomposers, like mushrooms and some insects, in an oak woodland break down complex organic molecules into simpler ones (e.g., water, carbon dioxide).
    • Food chains show which organism eats another.
    • Two types of food chains are: grazing (starts with plants), and detrital (starts with dead organic matter).
    • Food webs combine multiple food chains, showing interconnected energy transfer.

    Nutrient Cycling

    • Nutrient cycles (or ecological recycling) involve the movement of organic and inorganic matter.
    • Energy flow is unidirectional and non-cyclic.
    • Mineral nutrient movement is cyclic.
    • Examples of mineral cycles include carbon, sulfur, nitrogen, water, phosphorus, and oxygen cycles.

    Ecosystem Balance

    • Energy flow and nutrient cycling need to be constant to maintain equilibrium.
    • Green plants capture sunlight to convert substances from water, air, and rocks into living matter.
    • Any alteration in balance triggers chain reactions affecting the entire system.
    • Removing plants can lead to more floods, harming consumers.

    Biomes (Global Ecosystems)

    • Tundra is a treeless polar desert (-34°C to -6°C, 150-200mm rainfall).
    • Taiga has low annual temperatures (-10°C to slightly above 0°C, 40-100cm precipitation) and is dominated by conifer trees.
    • Temperate grasslands have sparsely populated trees, low precipitation (500-900mm per year), and wide temperature range (-20°C to 30°C).
    • Temperate deciduous forests have moderate temperatures (50°F/10°C) and 750-1500mm of rain annually with distinct seasons.
    • Savannahs are grasslands with scattered trees and shrubs, with distinct rainy (15-25 inches) and dry seasons.
    • Deserts have low precipitation (50cm maximum) with hot and dry, semiarid, coastal, and cold types.

    Tropical Rainforests

    • Tropical rainforests are located between 20-25 degrees north and south of the equator, receiving high rainfall and heat.
    • Constant warm temperatures and high humidity lead to plant and animal diversity.
    • High biodiversity, but also high extinction rates.

    Economic and Environmental Impacts

    • Subsistence farming involves growing crops for household use, often with lower environmental impact.
    • Commercial farming (e.g., cattle ranching, soy) results in more significant deforestation and environmental damage due to large-scale processes and release of harmful gases.
    • Deforestation results in habitat loss, biodiversity decline, and increased greenhouse gas emissions.
    • Logging removes trees, leading to habitat destruction, soil erosion, and increased greenhouse gas concentrations.
    • Mineral extraction can cause deforestation and environmental damage.
    • Energy development (oil and hydroelectric dams) can affect landscapes, habitats, and water flow.

    Sustainable Management Strategies

    • Selective logging removes specific trees, leaving the rest intact for biodiversity conservation and forest regeneration.
    • Replanting or reforestation restores cleared or damaged forest ecosystems.
    • Ecotourism encourages sustainable use of natural resources by creating jobs for local communities.
    • International agreements, such as the International Tropical Timber Agreement, promote sustainable forest management.
    • Debt-for-nature swaps encourage environmentally friendly practices in exchange for reduced debt.

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    Description

    Test your knowledge on ecosystems and their interconnected relationships. This quiz covers concepts such as producers, consumers, decomposers, and the differences between food chains and food webs. Dive into specific examples like UK oak woodlands to enhance your understanding.

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