Cars cars cars….:

Cars are an important cause of global warming because it produces carbon dioxide emission. It used world wide in every country and some people have more than one car. Even the streets that car move on it effect the global warming when it build because heavy trucks to build it and gar. Car’s light can also effect on global warming since it produce energy and heat. Factories that make cars use a lot of electricity without thinking about the global warming. Smokes also come from these factories that pollute the air.
http://www.theglobeandmail.com/servlet/story/RTGAM.20060117.wxcars17/BNStory/National/