What causes global warming?

The incoming solar radiations passes directly through the greenhouse gases but during the process of outgoing of radiations the infrared waves are trapped by the greenhouse gases. This leads to the escape of less heat and trapping of more heat on the earth’s surface which causes the gradual increase in the earth’s atmosphere. Like this global warming is taking place.

i just knew the minor cause of global warming bt the above case is major so i believe all should be aware about the causes of global warming and should take the corrective action.

Scientists have determined that a number of human activities are contributing to global warming by adding excessive amounts of greenhouse gases to the atmosphere. Greenhouse gases such as carbon dioxide accumulate in the atmosphere and trap heat that normally would exit into outer space.

The ozone acts like a greenhouse mirror. When infrared (heat) comes from sun and enters through the ozone layer, it cannot return back. So, the earth warms up a little. But in today's case, the burning of fossil fuel is also contributing to heating up the earth. This also causes global warming.