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See how ozone is formed!
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Ozone: Ozone can be good or bad. It all depends on where it is. Ozone is good when it is high up in our atmosphere. It protects us from sunburn. Ozone is bad when it is near the ground where we can breathe it in. You can't see ozone in the air. Bad ozone is sometimes called smog. It is formed when chemicals coming out of cars and factories are cooked by the hot sun. Ozone is more of a problem in the summer.

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