All causes of global warming

You have many causes of global warming and I will explain some of them. Actually, there are two main reasons of global warming or the increase of temperature in planet earth. Some of them are coming from human activities and some of them are coming from natural sources. For instance, the emissions are produced by nature from volcanic. Scientists have concluded that human activities are contributing to global warming by adding large amounts of gases of carbons to the atmosphere. Our fossil fuel use is the main source of these gases of carbons. Every time we drive a car to such as go to college or work, use electricity from coal fired power plants, or heat our homes with oil or natural gas to cook the food. We release carbon dioxide and other heat gases of carbons into the air and we don't give any necessary about what can it do for the humans and for the natural in the world. The second most important source of greenhouse gases is deforestation, mainly in the tropics because the trees are can only do clean the air from heat gases of carbons by absorbing the carbon dioxide from air and give the Oxygen into air.