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2 answers

They use the food for making energy (ATP) and then excrete the waste products (poop, urine, CO2) that the body cannot use,

2007-01-11 15:33:46 · answer #1 · answered by teachbio 5 · 0 0

They burn the energy they recieve from the food, same as most all living things..

2007-01-11 23:35:09 · answer #2 · answered by Poker Face 6 · 0 0

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