Pollution is when you put ____ things into the environment. A factory ____ the air with smoke and chemicals. A plastic bottle in the ocean is ____ pollution. Smoke from a volcanic eruption is ____ pollution. Littering is a type of ____ Pollution is ____ to living things on Earth. Pollution makes humans, plants and animals ____ We can help prevent pollution by ____ Smog is ____ for our lungs. My pollution solution ____ help keep the Earth healthy.

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