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6.Evolution
medium
ઉપરની આકૃતિમાં $'b'$ શું દર્શાવે છે?

A
$CH _{4}, NH _{2}, H _{2} S , He$
B
$CH _{4}, NH _{3}, H _{2} O , H _{2}$
C
$CH _{4}, NH _{3}, He , H _{2}$
D
$CH _{4}, CO _{2}, H _{2} O , H _{2}$
Solution
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Std 12
Biology