Define biosphere?
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What are primary consumers? 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?
What is the typical shape of a population growth curve?
What is biologic control?
What is the cost-benefit relation regarding sewage treatment as a strategy to fight water pollution?
What is the carbon cycle?
Explain ammensalism?
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?
What is population density?
Define a population?
How do populations of predators and preys vary in predatism?
Define population growth rate?
Explain the main means by which autotrophic beings obtain energy?