they become toxic. This is water pollution and it harms, kills or wipes out fish and plant species. When acid rain flows through the soil, it poisons trees and plants. Acid rain 3) ________ causes serious damage to important buildings and objects 4 Good news The good news is that governments have been trying to reduce the air pollution that causes acid rain. 4)............. industries have been using new technologies for some time to help make factory smoke less harmful to the environment. But we need to do more! We can help reduce the amount of acid rain by using 5) ________ cars less or by using solar power to heat our homes. We all need to work together to stop this problem before it's too late. Grammar Grammar Reference 3 Grandad ........................... for two hours. 4 Ann ........................... since 10 am.