How does net primary production relate to the energy pyramids?
What is mutualism?
What are the main chemical compounds that destroy the ozone layer?
How does the vegetal stratification of an ecosystem influence the biological diversity?
What are species?
Define predatism?
Under which form is nitrogen fixed by the living beings.
Define eutrophication?
Why is leguminous crop rotation used in agriculture?
What is bioremediation?
Explain the typical vegetation and the typical fauna of the deserts?
Why does thermal inversion increases air pollution?
How different are the concepts of migration, emigration, and immigration
What is the difference between primary ecological succession and secondary ecological succession?
Define water cycle?