六年级英语作文：protect our environment450字

With the improvement of our living standard, more and more people can afford a car. As a result, our roads are more often than not crammed with cars. However, with more and more waste gas being discharged by the cars, the problem of air pollution becomes even more serious. So nowadays we advocate to lead a low-carbon life.
　　My suggestion is we should ride bikes more often instead of driving riding a bike, we can not only exercise our body but also protect our environment. Why not have a try, my dear friends?

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