Ozone hole.
- Created by: Jess.H
- Created on: 08-05-15 18:44
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- Ozone hole.
- what is ozone
- a layer of 3 oxygen molecules 25 km up in out atmosphere.
- it protects us from UV-B (ultra violet B) which increases our risk of skin cancer, cataracts and suppress the immune system.
- UV-B can also damage plant life single-cell orgasms and sea-life.
- what is the ozone hole?
- sources of CFCs are: insulation materials, deodrant and spray cans, refriorators and air conditioning.
- the ozone hole is caused by CFCs.
- the hole closes in winter and open and spring although humans are changing that!
- what has been done about it.
- in 1987 all the countries agreed the Montreal protocol to phase out all CFC's over several decades.
- what is ozone
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