Define ammensalim?
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What is the primary energy source for life on earth?
Define carbon cycle?
Explain the role of the ozone layer for the living beings?
What is nekton?
Explain different types of wastes?
What are the main characteristics of the age pyramids of developed countries?
What is the relation between environmental resistance and the population growth according to the biotic potential curve?
Define water cycle?
Which type of ecological interaction is competition?
Define a biome?
What are age pyramids?
What is the most abundant form of nitrogen in nature?