What caused Climate Change?

Causes can be the Greenhouse effect where we are adding a lot of co2 which cause the Earth to heat up because we are trapping the heat, Deforestation the trees which means habitat loss and removing one of the cleanest ways to get CO2 out of the air, Agriculture produces massive amount of CO2 and they also produce methane which makes a horrible gas, Nitrous oxide. Factories work around the clock to make stuff but also make hug tons of CO2. The natural side of Climate change would include Volcanoes as it pumps CO2 and other gases, The sun output its energy [however this is questioned] and the orbit as when we get closer,we get hotter.