What are the main characteristics of the age pyramids of developed countries?
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What are the benefits can commensalism offer to a species?
In the ecological study of food interactions how are the autotrophic beings called?
What is the respective importance of carbon for the living beings?
What is plankton?
Explain how does the vegetal stratification of an ecosystem influence the biological diversity?
Define environmental resistance?
What is the respective importance of water, carbon, and nitrogen for the living beings?
Explain how are ecological interactions classified?
What is nuclear pollution?
Define an ecosystem?
What is a community?
Under which form is nitrogen fixed by the living beings.