Pollution is the presence in or introduction into the environment of a substance or thing that has harmful or poisonous effect. Pollution is, in my mind, the biggest environmental problem. We think pollution is minor and that we have people on the job to fix it, but really we don't. The water and the air is polluted so much that we didn't even recognize it as a problem but as just something that is in our environment and that it's just gonna be there. We need to do something to lessen the amount of pollution going into the air and into the water. One of the biggest reefs, The Great Barrier Reef is dying because of pollution in the water and that reef is the biggest and prettiest reef in the world. People are just hear that it is dying
