Climate change is caused by the greenhouse gasses. Greenhouse gases are carbon dioxide, methane, ozone etc. These gases came from factories, coal, oil and these stuff. Also It is caused by technology addiction and consumer addiction. If you say “how” the answer is simple. Computers, telephones, tablets etc. they all use electricity and electricity use energy and energy affects climate change. And also consumer addiction is a thing that you can say “how” as well. Well the thing is when we buy something they make the stuff again in “factories” and factories use greenhouse gases (carbon dioxide) and this affects climate change. And the fossil fuels that use greenhouse gases. The fossil fuels such as coal, oil etc. use greenhouse gases and this definitely affects climate change. Also every single one of the pollution affects climate change. Air pollution, Water pollution, deforestation, littering, light pollution etc.