Define carbon cycle?
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What is the most abundant form of nitrogen in nature?
Which type of energy is the light used in photosynthesis transformed.
Define ecology?
How are the grasslands of North America and of South America respectively called?
What is ammensalim?
What is a population?
Explain the three main types of tropic pyramids studied in ecology?
What are the major terrestrial biomes?
What are biotic factors?
Explain how do populations of predators and preys vary in predatism?
What are tropic levels? How many tropic levels can a food chain have?
Define bioremediation?