Question

what would have happened if there was no greenhouse effect

Answer 1

Without them the Earth would be too cold for us, or any other living thing, to survive. Naturally-occurring greenhouse gases, such as carbon dioxide and methane, allow solar radiation to reach the Earth's surface, while trapping radiation from the Earth on its way back out to space.

Answer 2

without green house effect the earth will become so much cooler and it also help in balancing of the atmosphere of the earth . it helps the people to survive on the earth . it creates warm so that the temperature become favourable for us .. hope it will help u bro!!!