We’ve all heard this word thousands of times. It’s almost as common as the word “the” in our everday conversations. We talk about what causes it and what we can do to prevent it. But do we even know what causes it exaclty?
Scientist say that main cause of global warming comes from human activities. These human activities add excessive amounts of green house gases, such as carbon dioxide, to the air. The green house gases compound in the air and trap heat that normally exist in outer space.
When we drive cars, using electricity from coal-fired power plants, or heat our homes with oil or natural gas, we release carbon dioxide and green house gases into the atmosphere. Deforestation is another significant source of greenhouse gases, because since there are fewer trees there is less carbon dioxide onverting into oxygen.
During the past 150 years of the industrial age the amount of carbon dioxide in the air has increased by 31 percent. During the same amount of time the level of atmospheric methane has risen by 151 percent, mainly from agricultural activities.
So what you might say. Well there are many dire consequence from global warming including changes in the climate and weather patterns. This may lead to species extinction, changing the length of seasons, coastal flooding, and more frequent and severe storms.
Global warming has a huge impact on all of us, even if you may not think so. This is why we must act now so we can keep our planet as beautiful as possbile. We can start by doing little things to cut down on our emission of green house gases. Such as car pooling and using more energy efficient light bulbs. It will not only will it help our planet, but save us a lot of money as well. If we do somehing about it now we will all be better off in the long run.
Source: http://environment.about.com/od/faqglobalwarming/f/globalwarming.htm
