What is age pyramid?
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What are persistent organic pollutants (POPs?
What is the formula of the net primary production (NPP)? How does NPP relate to the energy pyramids?
What is the difference between ecological niche and habitat?
Why is it a big environmental issue?
What is commensalism?
Under which form is nitrogen fixed by the living beings.
What is dry mass?
What are species?
What is transgenic food?
What is gpp?
Explain the difference between primary ecological succession and secondary ecological succession?
How do populations of predators and preys vary in predatism?