The ozone is an important part of Earth. The ozone is a highly reactive molecule that takes up residence in the stratosphere. It's main purpose is to protect the Earth from UV rays that are harmful. The more harmful UV rays can be cancer-causing. The ozone has been depleting because of the use of a substance called CFC's or Chlorofluorocarbons. These were found in aerosol containers because they contained CFC's. The UV rays break down the CFC's and one of the substances is chlorine. Chlorine is highly reactive with the ozone ,therefore breaking it down. CFC's were banned by The United States and Europe, but other countries banned before that. By then, it was too late and it will take a while for it to settle back down.Sadly, we humans messed up big time and had a huge effect on the environment and will continue to have to live with the consequences.
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