Answers

2016-04-13T00:18:01+05:30
Actually they simply absorb carbon dioxide dissolved in water.
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so my next question is from where water gets carbon dioxide to get it dissolved?
Organisms like fishes
2016-04-13T00:18:55+05:30
Plants use dissolved carbon dioxide in water which they take up from roots

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so my next question is, from where water gets carbon dioxide to get it dissolved?