1. OZONE DEPLETION
OZONE:
• Ozone layer encircles the earth
• Which screens out 99% of sun’s harmful
radiations
• Ozone located 24 Km away from earth’s surface
• It is in the form of ozone layer
• Ozone is a from of oxygen present in earth
surface.

2. Ozone layer important for following
reasons:
• It protects from ultra-voilet radiations from
sun
• It is connected wit h life sustaining process
• Depletion of ozone have effects on life
systems
• Concentration of ozone on earth’s atmosphere
is thinning

3. Causes of ozone depletion
• Emission toxic gases by automobiles, industries
• Human activities threaten ozone layer through:
1. Use of chemical compounds
2. Jet travel
3. Deforestation
4. Availability of oxygen necessary for maintaining
ozone level
5. The patches thinned ozone layer – called “ozone
holes”

4. 6. Ozone depletion since 1960’s
7. Each year ozone ‘hole’ grown larger

5. Methods of controlling ozone
depletion/hole
• Saving ozone layer is cell of the day
• Global efforts being made in this direction
• Material development to be replaced with
sustainable development
• Limit exploitation of National Resources
• Nations to save environment
• Developed countries to reduce disproportionate
use of natural recourses
• Cutting luxurious life styles

6. • Nations to follow environment goals
• Environmentally sustainable patterns of
development
• Sustainable development of forests
• Reducing gases contributing to global warming
• Protection of world’s diverse plant and animal
species
• Electric crematoria to be made in major towns,
cities
• Planting of trees to be integral part of school and
college education