2 Answers

Aleksandar Varicak · Answer 1 · 2016-05-09T08:26:10+0000

Plants are the start of the food chain. Plants breath carbon dioxide and breathe out oxygen. We breathe in oxygen and breathe out carbon dioxide

Will Tate · Answer 2 · 2016-05-13T02:15:53+0000

Plants breathe in carbon dioxide and breathe out oxygen. Animals breathe in oxygen and breathe out carbon dioxide. So they support each other.
Plants are at the start of every food chain.

Hope I helped You!!!

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