With the rapid development of the economy, pollution has become one of the most serious problems nowadays. The emission of greenhouse gases not only results in more and more CO2 in the atmosphere but also keeps the temperature going up. It has many harmful effects on human beings and nature, such as the rise of sea levels, many natural disasters and so on.
Therefore, it’s time to take steps to make a difference. First of all, we should save energy .We should turn off the lights, the TV ,the computer and so on if we are not using them any longer. We can walk or ride a bike when we go out instead of using motor vehicles. Secondly, we should plant more trees as they absorb carbon dioxide from the air and refresh our spirit when we look at them. Finally and most importantly, we should talk with our family and friends about global warming to raise people’s awareness of the importance of protecting the environment.