Maximum contribution of \[{{O}_{2}}\] is from [CBSE PMT 1989] – McqOptions

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1.	Maximum contribution of \[{{O}_{2}}\] is from [CBSE PMT 1989]
A.	Phytoplankton
B.	Grasslands
C.	Herbs and shrubs
D.	Dense forest
Answer» B. Grasslands

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