why the temperature is increasing

http://environment.nationalgeographic.com/environment/global-warming/gw-causes/

The human activity produce a lot of disasters and good´s. with all the machinery that the human ´s had , the atmosphere change and suffer. everyone of the gases that the human´s industries get to the air produce a disaster in the ozone layer. this gases that keep in the ozone layer don´t allow that the sunbeams escape for the earth. When the sunbeams does not get out the earth suffer a increase of the temperature, that produce a lot of disasters.