Explain what are fossil fuels?
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What do you mean by sustainable ecology?
What is pollution?
What are pioneer species?
What are primary consumers? Can a tertiary consumer of one chain be a primary or secondary consumer of another chain?
Is monoculture a system that contributes to great biological diversity of an ecosystem?
What are persistent organic pollutants (POPs?
Does thermal inversion occur in the winter or in the summer?
How do populations of predators and preys vary in predatism?
What benefits can commensalism offer to a species?
Explain some examples of migratory animals?
What is an example of intraspecific competition?
Explain how does the vegetal stratification of an ecosystem influence the biological diversity?