| A | B |
|---|
| pollution | harmful changes in the air, water, or land |
| main causes of pollution | burning of fuels (oil,coal,wood), cars, trucks, buses |
| What air pollution can do to us | make our eyes sting, damage lungs, cause headaches, sneezing, or coughing |
| What communities do to protect the environment from air pollution | pass laws that new cars can give off certain amounts of gas, scrubbers for factories, solar homes, |
| ground water | water in the ground |
| how ground water becomes polluted | fertilizers and pesticides |
| how people and animals are harmed by polluted water | people get cancer, nerve damage, or typhoid fever from dirty water |
| sewage treatment plants keep our water clean by | taking waste out of the sewage |
| landfill | a place where garbage and trash are buried |
| landfill problems | take up space; waste seeps into the ground; rats |
| recycling | means to be used again |
| recyclable materials | plastic, paper, rubber, copper, glass, aluminum cans |
| biodegradable | to break down into soil |
| What was wrong with the town called "Away" | it polluted the bay |
| how did the Away townspeople help with these problems | they signed an agreement to clean it up |
