Define population density?
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What is mutualism?
Why plutonium reprocessing is a big environmental issue?
Explain how does the vegetal stratification of an ecosystem influence the biological diversity?
What are the environmental harms caused by mercury pollution? What are the main sources of mercury pollution?
Define harmonious ecological interaction?
Define global warming?
What is the relation between environmental resistance and the population growth according to the biotic potential curve?
Can food chain present quaternary consumers without having secondary or tertiary consumers? Can a tertiary consumer of one chain be a primary or secondary consumer of another chain?
Explain what is an example of intraspecific competition?
Define water cycle?
Explain the difference between the concepts of food chain and food web?
What are some examples of migratory animals?