The informative presentation discusses the ozone layer, how it is being depleted, and the effects of depletion. The main causes of ozone layer depletion are harmful gases like CFCs and HFCs used in products like air conditioners and refrigerators. Depletion of the ozone layer leads to increased UV radiation, which can cause skin cancer, eye damage, and weaken the immune system. Solutions discussed include banning harmful gases, reducing pesticide and fossil fuel usage, and increasing public awareness of the problem. The presentation emphasizes the importance of global cooperation to address ozone depletion and mitigate its effects.

1. INFORMATIVE PRESENTATION
THE OZONE LAYER
Presented By : Professor :
Rajvinder S Yogi Judy Mussio
Sarbrinder S Dhillon

2. Introduction
 Protective blanket of earth.
 Present in lower portion of stratosphere.
 Absorbs most of sun’s Ultra violet radiations.
 Drop in ozone levels in atmosphere lead to
“ozone holes”.

3. Introduction
We will be discussing:
 How ozone layer getting depleted ?
 What are the effects of the ozone layer depletion ?
 How we can resolve these problem?
Why we chose this:
 Spread awareness on extent of problem: Prime reason leading to global warming.
 What is at stake!
 To initiate efforts on individual level being responsible citizen of country.
 To secure life of present and future generations by making this planet livable for all of us.
 Group Members- Rajvinder and Sarbrinder.

4. Causes
 Release of harmful gases like:
CFC, HCFC, Methyl Bromide
o Used in Air-conditioners, Refrigerators, fire extinguishers.
 VOC(Volatile organic compounds)
o Emitted by vehicles.
 Natural Disasters: Volcanic eruption (Carlowicz, 2013)

5. Causes
 Sun Spots and Stratosphere winds.
 Low Temperature.
Harmful gases
reach
stratosphere
Get Exposed to
UV rays
Breakdown to free
chlorine which
reacts with ozone
causing ozone
depletion

6. Effects
 Damage to skin by depletion of the ozone layer:
 Main factor in influencing development of Skin Cancer.
 Pre-mature aging of the skin.
 Effects on plants and animals:
 Disturb photosynthesis process; lower yield from plant and cereal crops.
 Inhibit growth process of flora and fauna; thus food supply.
 Decreasing plankton population which is primary
source of food in marine ecosystem.

7. Effects
 Effects on eye sight:
 Damage lens and cornea.
 Fatal diseases like cataracts in particular and even loss of eyesight.
 In General:
 Rise in global temperature.
 Sunburn issue with frequent exposure to sun.
 Weaken immune system lead to lower resistance to diseases(Canada, 2015).

8. Solutions
 Exposure to sun with precautions:
 Must use sun screen to protect skin.
 Must use sun glasses to protect eyes.
 Plant more trees and avoid usage of pesticide.
 Buying and using recycled products.(Austin,2015)

9. Solutions
 Harmful gases ban:
 Alternate to CFC,HCFC must be introduced by
the manufacturers of AC, Fridge etc.
 Protocols should be introduced on provincial and federal level
to keep check on use of such gases during industrial processes.

10. Conclusion
 Harmful gases are the main cause of Ozone depletion.
 It risk the lives of living being.
 Protocols implemented and results are better..
 Volunteer action for future generations.
 Whole word must join hand and spread awareness about
the issue of the ozone layer depletion.
 Your small efforts could make a big difference.

11. Lasting Thought
 Lets come together and make this planet better place to live.
 Use the precious resources given by nature.
 Lets take a pledge not to destroy our home our earth.

12. References
Austin, J. (2015, Oct 19). Ozone recovery. Retrieved from
http://www.express.co.uk/news/science/613084/Ozone-recovery-shock-Nasa-
say hole-in-Ozone-Layer-should-be-half-closed-by-2020
Environment and Climate Change Canada. (2015, April 23)Retrieved from
https://www.ec.gc.ca/ozone/default.asp?lang=En&n=3E8154B2-1
Carlowicz, M. (2013, April). The Ozone Layer: Our Global Sunscreen. Retrieved from
https://www.acs.org/content/acs/en/education/resources/highschool/chemmatt
ers/past-issues/archive-2012-2013/ozone-layer-our-global-sunscreen.html