Click on the sentence that best describes
the main idea of the story or paragraph.
|There are several types of pollution that are serious problems on Earth.||Pollution is a serious problem on our Earth today. People and companies pollute the water by throwing trash into it. Chemicals that kill plants and fish are also dumped into the water. Air pollution is another type of pollution that we should worry about. Some of the air we breathe is not clean. Factories and power stations pollute the air with smoke and poisonous gases. Cars also make exhaust fumes that pollute the air. When these gases mix with the water in the air, they produce acid rain. This rain is not good for the plants on earth. The more acid there is in the rain, the faster it will kill the plants.|
|Acid rain is bad for plants.|
|Air pollution is the most serious type of pollution.|
This site is no longer being maintained, but will remain online for the use of educators.