30 Questions
What percentage of energy is transferred from one trophic level to the next?
10%
What is the name given to the circular movement of elements and compounds in ecosystems?
Biogeochemical cycles
What is the primary component of the atmosphere?
Gases
What is the term for the flow of materials from the environment to organisms and back to the environment?
Flujo de materia
What is the name of the models that show the relationships between organisms in an ecosystem?
Ecological pyramids
What is the purpose of the majority of the energy transferred between trophic levels?
To fuel the metabolism of organisms
What is the main difference between primary and secondary succession?
Secondary succession occurs in areas with existing vegetation.
What is a community called when it reaches relative stability?
Community climax
What is an example of an area where secondary succession might occur?
An abandoned farm field
According to the LGEEPA, what is environmental impact defined as?
The modification of the environment caused by human or natural actions
What is an effect of environmental deterioration?
Negative impacts on human health
What is altered in an ecosystem as a result of environmental impact?
The structure and function of the ecosystem
What has been the approximate reduction in the Arctic ice cap in the last 30 years?
3 million km2
What is the reason for the increase in frequency and intensity of tropical storms and hurricanes?
Increase in global temperature
What happens to rainfall patterns as a result of global warming?
They become less predictable
What is the estimated number of people living in extreme drought conditions?
400 million
What is one of the health impacts of global warming?
Increase in infectious diseases
What is one of the economic impacts of global warming?
Damage to buildings and infrastructure
What is a predicted consequence of climate change?
Scarcity of food and water worldwide
What is the main cause of environmental problems like pollution, greenhouse effect, and global warming?
Irresponsible use of natural resources
Who developed the concept of ecological footprint?
William Rees and Mathis Wackernagel
What does the ecological footprint measure?
The consumption of natural resources by individuals
In what unit is the ecological footprint measured?
Hectares
Why is it important to reduce our ecological footprint?
To preserve resources for future generations
What is an ecosystem?
A community of organisms that interact with their physical environment
What are biotic factors in an ecosystem?
Groups of organisms that perform different activities
What is an example of an abiotic factor in an ecosystem?
The amount of sunlight available
What are the different types of ecosystems known as?
Biomes
What are natural ecosystems characterized as?
Natural, self-sufficient, stable, and long-lasting
How can ecosystems be classified in terms of human interaction?
Natural, rural, and urban
This quiz covers the basics of ecosistemas, the unit of ecological study where living organisms interact with their physical environment. It explores the structure and functioning of ecosystems.
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