What are primary consumers?
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Define population?
Explain the typical conformation of the age pyramids of underdeveloped countries?
What is the zooplankton?
What are tropic levels?
Explain how are ecological interactions classified?
What is the group of aquatic beings composed of large number of photosynthetic beings?
Define mutualism?
What are the typical vegetation and the typical fauna of the tundras?
what are the difference between migration, emigration, and immigration?
How does net primary production relate to the energy pyramids?
Explain different types of wastes?
Define ammensalim?