Define population growth rate?
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What are societies?
What is the formula of the net primary production (NPP)? How does NPP relate to the energy pyramids?
Explain how can the abundance and diversity of living beings in the tropical forests be explained?
What is selective waste collection?
What are autotrophic beings?
Which terrestrial vertebrate group is extremely rare in deserts?
What are some examples of interspecif competition?
How are grasslands classified?
What are the advantages of leguminous crop rotation in agriculture?
What is the climax stage of an ecological succession?
What are biogeochemical cycles?
What are persistent organic pollutants?