question_answer

 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\[k{{m}^{3}}\]