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3 answers

I am quite sure it occurs naturally.

2006-10-30 08:24:32 · answer #1 · answered by ruth4526 7 · 0 0

The previous answer is correct. It is in the air. The plant takes it in though little holes in the bottom of the leaf. Through photosynthesis it uses the CO2 and H2O to make sugars, and releases oxygen as a waste.

AAhhhh, plant waste!!!!!!!!!!!

2006-10-30 13:51:08 · answer #2 · answered by teachr 5 · 0 0

Carbon dioxide from the air, in the case of terrestrial (land) plants.

Carbon dioxide from the air is fixed as carbohydrates in the light-independent reactions of photosynthesis.

2006-10-30 08:26:42 · answer #3 · answered by Anonymous · 1 0

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