Why are the carbon cycle, phosphorous cycle, water cycle, and nitrogen cycle all considered to be biogeochemical?

Answer 1

Basically they are called biogeochemical cycles as many living forms and geological environment plays a vital role in completing the cycle

Let's use the carbon cycle as an example. High temperatures and pressures in the earth's crust are crucial, as are biological elements like plants and dead animals, which eventually combine to form carbon.

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Answer 2

Julian Aguilar

These cycles are considered biogeochemical because they involve the movement of elements (carbon, phosphorus, water, nitrogen) between living organisms, the atmosphere, the hydrosphere, and the lithosphere, influencing both biological and geological processes.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.