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Which of the following two cycles are the most closely related in their role in sustaining life?

Acarbon and nitrogen
Bwater and nitrogen
Ccarbon and oxygen
Dnitrogen and phosphorus please select the best answer from the choices provided a b c d

Verified Answer :

c because both are either used or is a waste product in all organisms

Answer: d. nitrogen and phosphorus

Nitrogen and phosphorus are important component of the genetic material present in the living organism, required for the expression of genes to perform a desire function in the living organisms. Both nitrogen and phosphorus are chief ingredients of the fertilizers required for the plant growth. Hence, nitrogen and phosphorous are two cycles that are most closely related in their role in sustaining life.

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