Acid rain Acid rain is a huge natural threat to the environment. There are sulfur dioxide and nitrogen oxides mixing with normal rani water in this case. When we burn so much fuel, it releases lots of nitrogen oxides and sulfur dioxide. It goes straight to the atmosphere and makes the cloud dirty. Then it comes to earth as ‘Acid Rain’. The experts have marked this rain has one of the biggest disasters for the earth. It damages the buildings. It is the biggest reason for water and air pollution. It mixes with normal water. We should do a campaign and let people be aware of this. 本文来源：https://www.wddqw.com/doc/1102bffda56e58fafab069dc5022aaea988f418c.html