Question

give importance of green house gases present in the atmosphere in points

Answer 1

A greenhouse gas is a gas in an atmosphere that absorbs and emits radiant energy within the thermal infrared range. This process is the fundamental cause of the greenhouse effect. The primary greenhouse gases in Earth's atmosphere are 
(1) water vapor,
(2) carbon dioxide, 
(3)methane, 
(4)nitrous oxide and
(6) ozone.