kikibrown05 kikibrown05

04-09-2020
Advanced Placement (AP)

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Explain why chemical (nutrient) cycling is essential for maintaining life on earth.

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kyraqaiob kyraqaiob

04-09-2020

Balance is essential to the earth. Chemical cycles keep the amount of elements on the earth in a perfect balance. The amount of oxygen in and around the earth is fixed. In a process called respiration, animals and plants take oxygen from air and give back carbon dioxide.

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