The Ozone Layer is a region of the atmosphere from 19 to 48 km (12 to 30 mi) above the Earth's surface. Scientists were concerned when they discovered in the 1970s that chemicals called chlorofluorocarbons, or CFCs-long used as refrigerants and as aerosol spray propellants-posed a possible threat to the ozone layer. These chlorine-containing chemicals rise and are broken down by sunlight. The chlorine reacts with and destroys ozone molecules - up to 100,000 per CFC molecule. Destruction of the ozone layer is predicted to cause increases in UV radiation (causing an increase in skin cancer), damage to certain crops and to plankton and the marine food web, and an increase in carbon dioxide due to the decrease in plants and plankton.

Global Warming is an increase in the Earth's temperature caused by too many greenhouse gases. Excess amounts of carbon dioxide, m

If the Greenhouse Effect is being treated the way it is now, the polar ice caps would gradually melt, resulting in climate changes, more hurricanes and tropical storms, and mass flooding on Earth. This is called Global Warming.

Some common words found in the essay are:
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Approximate Word count = 649
Approximate Pages = 3 (250 words per page double spaced)