Nowaday more and more families have private cars.They play really important role in our life .They are more convenient to our life.
But everything has two side.The cars can produce greenhouse gases which can cause global warming .These cars make weather hotter and hotter. Temperature rise will bring serious problems such as ice melting and sea level rise .
Although the private cars are very convenient.But they will also cause disasters in the future.So please don't drive your private car all the time .
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