How are the grasslands of North America and of South America respectively called?
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Define an ecosystem?
Is herbivorism a form of predatism?
Explain what is an example of intraspecific competition?
In a numeric pyramid to which tropic level does the base always refer?
Explain the analyses provided by the study of human age pyramids?
What do biomass pyramids represent?
Define protocooperation?
What are primary consumers? Can food chain present quaternary consumers without having secondary or tertiary consumers?
What is commensalism?
How are the heterotrophic beings divided in the ecological study of food interactions?
Why transgenics are considered a threat to the environmental safety?
Explain the main characteristics of the age pyramids of developed countries?