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2015-03-07T13:38:44+05:30

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Oxygen cycle is important because organisms need oxygen to live.If there is no oxygen cycle then there will be lack of oxygen to survive and amount of carbon-di-oxide would increase resulting in death of organisms.
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2015-03-07T16:56:05+05:30
Oxygen cycle is so important because if it doesn`t take place we don`t survive on earth because the carbon dioxide level increase and the oxygen level decrease.
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