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WHAT IS GLOBAL WARMING??
Greenhouse gases are released into the atmosphere in many ways, including through the burning of fossil fuels (such as coal and petroleum) and by deforestation. As some environments warm (e.g. the Arctic tundra) they also release carbon that may have been stored for thousands of years.Scientists think that Global Warming is caused by the gases produced when humans burn coal, oil, etc. These gases trap the sun's heat in the atmosphere. Carbon dioxide is made when these fuels are burned. Percentage of carbon dioxide in the atmosphere has been rising as result of human industries since the Industrial Revolution.

Heat absorbing gases are known as greenhouse gases. The warming of the atmosphere is called the greenhouse effect. Humans add extra greenhouse gases, which gains a bigger chance in the greenhouse effect. The increase causes global warming..


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