Question

which gas is responsible for greenhouse effect

Answer 1

carbon dioxide is responsible for it.

Answer 2

Hi there!

Carbon dioxide is responsible for GreenHouse Effect.
The two main gases responsible for the greenhouse effect are :

♦ Water vapour, $H_{2}O$

♦ Carbon dioxide, $CO_2$

Carbon dioxide is the leading culprit of greenhouse gas.
but, Carbon dioxide only contributes over half of the atmospheric pollution creating climate change.

[ Thank you! for asking the question. ]
Hope it helps!