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B) The nutrients are picked up and transported around the body by blood from the circulatory system.

Explanation:

Food goes through your digestive system. Nutrients are taken out of your food in your intestines. Your intestinal walls absorb the nutrients and put them into your blood, which is put into your bloodstream in the natural cycle of blood going through your veins and arteries. Along the way, nutrients are brought to cells everywhere in your body before going through your heart and then kidneys.

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a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

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answer is

human impact on the environment can be seen in the deterioration of the !

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