Global warming

The Earth’s climate is very complicated system. What’s more, it is now widely recognised that human activity is having effect on it. The pollution which happens from the use of oil and coal in industry, deforestation and exhausted fumes from vehicles are causing significant changes to the Earth’s climate. These changes lead to a lot of environmental problems. Global warming and ‘greenhouse effect’ cause melting icecaps, raising the level of sea. It is already affecting several areas of the world with unusual disasters such as floods and droughts.
One of the most serious problems is increment the amount of carbon dioxide. When living creatures breathe out and when things are burned, CO2 enters the atmosphere. Until recently all of this was absorbed by trees and plants, witch converted it back into oxygen. But the balance of nature has been disturbed. In power stations, in factories and in cars, we are burning more and more fossil fuels such as coal, oil and natural gas. And the destruction of forests means that there are fewer trees to convert the carbon dioxide into oxygen. So the amount of CO2 in the atmosphere is increasing all the time.
The other significant...

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