Is global warming a real threat?
First of all I would like to explain what is global warming. There are gasses in the earth’s atmosphere that protect surface from the heat of the sun, allowing life to exist. This is “Greenhouse effect” and it is very beneficial for us. However human activities has destroyed some of these gases since the progress in Industry that lead to the greenhouse effect out of control and created global warming.
Carbon dioxide produced by burning gasoline, and many other gases play a big role causing global warming. That’s primary emission from cars or burning natural gas at homes. The other main human-caused factor is cutting down trees which absorb carbon dioxide. The warming is increasing, in the last century temperature increased about 1 degree Fahrenheit; it doesn’t sound much but it can make difference. The scientists estimate that temperature will increase another 2.5-10.4 degree by 2100.