Answers

2015-10-12T18:01:29+08:00
They obtain energy to keep them alive is to eat and drink water cause it give nutritions to give energy.
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2015-10-13T16:56:06+08:00
To obtain energy animals and human must eat because the food that we take in is the source of energy when it  is burned with the help of oxygen inside each cells of the body
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