Question

Which of the following gas is a by-product of photosynthesis?
(A) Nitrogen
(B) Carbon dioxide
(C) Oxygen
(D) Hydrogen

Answer 1

Heya!!!

Here is ur ans

As ur question is

Which gas is the by product of photosynthesis
______________
________&_____

Ans is
$oxygen \\ \\ hope \: it \: helps \: u$