The main effect that causes global warming is the greenhouse effect, a phenomenon referred to absorption by certain gases in the atmosphere. This is caused by consequences of human actions, more and let me hand the importance of a good atmosphere for humans. The persons aren't aware of all the pollution we make, to throw garbage into rivers also pollute the oceans, all the smoke produced by factories, means of transport and many hours are also things that cause this phenomenon.
We must wake up and stop these acts so that in future we can have a world with fewer problems.
