In today's world, there is a lot of pollution in the air. People cause pollution. For some reason we do not seem to care about what happens to the earth. We throw trash everywhere.
People dump waste in the ocean including oil which can harm animals and fish.
We drive cars that create pollution. I came up with a few ways to lessen the amount of pollution. Since motor vehicles burn gas, they releases a lot of exhaust, which is our main air pollution problem. B. Metro can make it easier to reach bus and train stations by foot or bike so that people would not have to be so dependent on their cars. They could run the buses and trains frequently so people would not have to check schedules.