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2015-04-05T15:53:38+05:30

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We all know that plants give us oxygen and humans and animals exhale carbon dioxide which is essential for plants growth. In this way both of them benefit each other
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2015-04-05T16:52:09+05:30
Animals  need oxygen to survive and plants need carbon-dioxide to prepare there food by exchanging gases in between them  

hope that was helpfull :)
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