Introduction and thesis statement:
How much damage can the earth suffer from human beings? Now global warming has become a very serious problem, and the exhaust emissions of automobiles are very heavy. In fact, the ecology of saving the planet is very simple. As long as each of us drives less every day, it will have a lot of positive impact on the whole earth. In summary, Cars have a major impact on the environment and biological safety of the entire planet.
Body：
First Main point：private cars are the main cause of global warming
Second Main Point: Vehicle exhaust emissions account for one-third of the total carbon dioxide emissions in the United States
Third Main Point: The impact of cars on the earth is not only limited to the environment, it also has a great negative impact on the entire society and human health.
Fourth Main Point： look at climate issues from a large pattern, such as the change in the surface of the Earth and the connection between the universe, and the car is one of the reasons for the changes in the Earth.
Fifth Main Point： cars have many consequences for the health of children, so it suggests that we start taking action immediately.
Conclusion：
Cars have a lot of impact on the earth and on the planet. What kind of attitude should we face the car? What kind of choice should the whole society make? This is a problem that we need to face as a new generation of power. When we enjoy the convenience brought by the car, we must bear the negative consequences of the car. I hope our planet can get better and better.