Answers

2015-07-21T21:11:24+05:30
Plants are used in many ways.
we need oxygen in air to breath plants take in carbon dioxide gas that we breath out and it into oxygen . plants give us food . they give us vitamins and minerals to stay healthy
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We want oxygen absolutely. Even it gives food to us.
2015-07-25T13:56:53+05:30
It gives us oxygen to live and it even gives us food.
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