How big is the ozone hole?

Related questions

1. Are greenhouse gases good?
2. Is CFC gas harmful to humans?
3. Is CFC heavier than air?
4. Do we still use CFCs?
5. What country is the largest contributor to greenhouse gases?
6. How are CFC's harmful?
7. How did CFCs destroy the ozone layer?
8. What is CFC greenhouse gas?
9. What has been done or is being done to repair the ozone layer?
10. Is CFC toxic?

Tags

1. #times
2. #reached
3. #miles
4. #almost
5. #square
6. #contiguous
7. #according
8. #annual
9. #three
10. #united
11. #coverage
12. #kilometers
13. #states
14. #ozone
15. #million
16. #average