What is the zooplankton?
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What is the respective importance of nitrogen for the living beings?
Is the upward move of the warm air good or bad for the dispersion of pollutants?
What is plankton?
What is the zooplankton?
What is the respective importance of water for the living beings?
Explain the difference between primary ecological succession and secondary ecological succession?
What is the gross primary production of an ecosystem?
In the ecological study of food interactions how are the autotrophic beings called?
What are persistent organic pollutants (POPs?
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?
Why is the sun the “motor” of the water cycle?
What is transgenic food?