What is the carbon cycle?
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What is harmonious ecological interaction?
Define mutualism?
Explain water cycle?
What are persistent organic pollutants?
Is monoculture a system that contributes to great biological diversity of an ecosystem?
What is age pyramid?
what are the difference between migration, emigration, and immigration?
Can the amount of available energy in a given tropic level to be larger than the available energy in inferior tropic levels? What does that condition means to the conformation of the energy pyramids?
Define water cycle?
Why waste is considered one of the major environmental issues?
What is the formula of the net primary production (npp)?
What is commensalism?