Explain some examples of migratory animals?
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What is the typical vegetation of the grasslands?
What is competition?
Explain why the tropical forests are also known as stratified forests?
What is the relation between environmental resistance and the population growth according to the biotic potential curve?
What are the phytoplankton and the zooplankton?
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?
Define ammensalim?
What are the environmental harms caused by mercury pollution? What are the main sources of mercury pollution?
What are abiotic factors?
Explain the main characteristics of the age pyramids of developed countries?
How many tropic levels can a food chain have?
What are the analyses provided by the study of human age pyramids?