What are tropic levels? How many tropic levels can a food chain have?
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Explain how does the vegetal stratification of an ecosystem influence the biological diversity?
Is herbivorism a form of predatism?
What are the environmental harms caused by mercury pollution? What are the main sources of mercury pollution?
What is plutonium reprocessing?
What are intraspecific and interspecific ecological interactions?
Define population density?
What is the formula of the net primary production (NPP)? How does NPP relate to the energy pyramids?
What are the main factors that affect the growth of a population?
What is the primary energy source for life on earth?
Explain the typical conformation of the age pyramids of underdeveloped countries?
What is predatism?
Define biotic potential?