Explain the role of the ozone layer for the living beings?
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Define pollution?
What are primary consumers?
Define biologic control?
What is predatism?
Which terrestrial vertebrate group is extremely rare in deserts?
Explain some examples of migratory animals?
What are the main limiting factors for the growth of a population?
Define ecosystem in your own language?
Define global warming?
What are pioneer species?
What are some economic applications that can be generated by very biodiverse ecosystems?
What is the main means by which autotrophic beings obtain energy?