Global Warming is caused by humans mostly. Humans are causing the earth's surface to get hotter day by day. Researchers, like Philip Mote, the Washington state climatologist say that the certainity that global warming is caused by humans is 90 percent, as of today.

The warming of the planet is anthropogenic, which means it is created by humans. Carbon dioxide, which can come from failing sinks, deforestation, fossil fuel, and such are helping global warming continue faster. Also, metane, possibly from cattle and rice paddies, clathrates, and the Artic Tundra are one of the main causes of the warming. The Nitrogen Oxides from farming can also badly affect global warming. There is a countless number of gases dangerous to the earth, if exposed widely. Carbon dioxide, metane, and other dangerous gases from power plants, cars, and other sources are destroying life for aquatic creatures and land species, too.

Carbon dioxide is the most harmful cause. It comes fmo everything that humans burn from some ships, cars, airplanes, coal plants, some factories, and many more. It is from fossil fuel exposure. In addition, deforestation is harming our planet greatly. Living plants take in the carbon. However, since people are deforesting, these plants are dead or no longer there. Hence, the carbon dioxide is released back into the atmosphere, leading to an unterminable warming of the earth.

As you can see, humans cause all this trouble. I'm sure there is a bit of a natural cause for this. However, there are lots of evidence that global warming's main cause is humans' wrongdoings. Deforesting and burning fossil fuel can really damage the planet. If humans continue this kind of IRRESPONSIBLE behavior, the earth will most likely be damaged beyond repair.

Sources used:

http://www.seattlepi.com/local/article/Scientists-agree-Humans-causing-global-warming-1227187.php

http://www.edf.org/sites/default/files/5279_GlobalwarmingAttributuion.pdf

http://www.acoolerclimate.com/what-causes-global-warming-learn-the-major-human-causes-of-climate-change/

STOP DRIVING YOUR CAR, CUTTING DOWN TREES, AND RIDING AIRPLANES!!!