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Jimmgarr · Answer 1 · 2016-01-20T20:58:22+0000

A organ is a body part made up of tissues. The levels go like this cells make tissues, tissues make organs, organs make a system .......... an example of an organ is the heart, liver, brain,

Mbourgon · Answer 2 · 2016-01-26T23:04:33+0000

One organ is the heart. The blood gives your body with the oxygen and nutrients (that flow though it) it needs.

Hope to help
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