1.

 Approximate amount of water on earth which split by photosynthesis once every 2 million years is

A.                 10 million\[k{{m}^{3}}\]        
B.                 15 million\[k{{m}^{3}}\]
C.                 20 million\[k{{m}^{3}}\]        
D.                 25 million\[k{{m}^{3}}\]
Answer» C.                 20 million\[k{{m}^{3}}\]        


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