what are the difference between migration, emigration, and immigration?
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What are the analyses provided by the study of human age pyramids?
Is herbivorism a form of predatism?
What is biosphere?
What are some economic applications that can be generated by very biodiverse ecosystems?
Which type of energy is the light used in photosynthesis transformed.
What are biogeochemical cycles?
What are autotrophic beings?
What are persistent organic pollutants (POPs?
Explain the typical vegetation and the typical fauna of the deserts?
What are pioneer species? What is the role of the pioneer species?
Explain the main characteristics of the age pyramids of developed countries?
Explain pops?