Explain the primary energy source for life on earth?
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How can a great biological diversity protect an ecosystem from environmental damages? Why are less biodiverse ecosystems under the risk of suffering deep biological harms if submitted to even small changes?
What are the analyses provided by the study of human age pyramids?
Explain the typical vegetation and the typical fauna of the deserts?
What is the typical fauna of the tropical forests?
What is the group of aquatic beings composed of large number of photosynthetic beings?
What are age pyramids?
How are ecological interactions classified?
Which is the autotrophic group responsible for the production of most part of the molecular oxygen of earth?
What is the typical vegetation of the grasslands?
Define environmental resistance?
What is biologic control?
What are the environmental harms caused by mercury pollution?