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What is the importance of the carbon and nitrogen cycles to ecosystems?


They ensure that matter only moves within a nonliving environment.


They are needed to release the energy stored in food.


They supply the energy needed for living processes.


They provide materials organisms need to build their bodies.

Sagot :

D They provide materials organisms need to build their bodies.

Explanation:

plant absorbs n2  animal eats it the plant the animal dies it releases the n2 as  n2 ammonia  which a plant absorbs beginning the cycle again.

animal inhales oxygen exhales co2 plant absorbs co2 releases o2. and then the cycle begins again.

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