Ozone Depletion

3. Use _________ with a protection factor of 15 or 30 anytime you are in the sun if have light skin.
5. Repeated exposure to the sunlight’s UV radiation can cause ______ which can become dangerous and cancerous.
9. This treaty’s goal was to cut emissions of CFCs by 35% between 1989 and 2000.
11. A result from increased ozone depletion. Photochemical ______.
12. What part of the atmosphere does the ozone layer lie in?

1. Exposure to UV radiation is major cause of this.
2. An effect of _______ ________ is when warming is accelerated because of decreased uptake of CO2 from atmosphere by phytoplankton and CFCs acting as greenhouse gases.
4. Widely used as refrigerants, propellants and solvents, these organic compounds contribute to ozone depletion.
6. Over this continent 40-50% of ozone in the atmosphere has disappeared.
7. This type of cancer is the deadliest of skin cancers.
8. This radiation reaches the earth’s surface because of ozone depletion. It is harmful to human, crop, forest, and animal health as well as materials such as paints and plastics.
10. Increased UV radiation can harm the _________ inside the eye of many species.