1. GLOBAL WARMING & CLIMATE CHANGE BY REMINDER MKANSI 2016

2. WHAT IS GLOBAL WARMING?
It is referred to the warming of the earth’s lower atmosphere which is known as troposphere caused by high concentration of one or more greenhouse gases thus resulting in climate change that may last for decades.

3. Layers of the atmosphere
Ozone layer

4. What is climate & climate change
Climate may be defined as a long term weather of an area / the usual weather of an area / an average weather patterns recorded for at least 30 years.
Climate change refers to the changes that occur within our usual weather patterns.

5. What are greenhouse gases?
They are gases within the earth’s troposphere that trap the outgoing long wave radiation (heat) thus resulting in a greenhouse effect.

6. Greenhouse effect

7. Greenhouse effect

8. Examples of greenhouse gases?
Carbon dioxide (CO2)
Causes
Deforestation
Burning fossil fuels (coal),wood, papers etc.
Cars

9. Examples of greenhouse gases..
Methane (CH4)
Causes
Coal mining
Landfills / Decomposing materials
Manure management

10. Examples of greenhouse gases..
Nitrous oxide (N2O)
causes
Use of nitrogen fertilizers
High temperature of fossil fuels combustion
Livestock manure
Human sewage

11. Examples of greenhouse gases..
Chlorofluorocarbons (CFCS)
Causes
Refrigerators
Aerosols/Sprays
Results in Ozone depletion (ozone layer within the stratosphere helps prevent UV radiation from penetrating towards the earth.)

12. Effects of ozone depletion
Skin cancer
Eye cataracts
Worse sun burns
Suppress immune system
Low food production (damaged leaves cant photosynthesize)

14. Water vapour (H2O)
causes
Evaporation
Too much water vapour may result in more cloud cover thus reducing food production.

15. Effects of climate change

25. Solutions on reducing climate change effects
Plant more trees.
Recycle waste materials.
Use hot plates instead of firewood.
Use public transport more often / fuel efficient cars.
Switch off appliances when not in use.
slow population growth.
Promote more environmental awareness campaigns

26. Solutions to save water
Avoid washing vegetables or fruits under running water, use a bowl and also use such water at your garden.
Wash your car with at least two buckets of water instead of using a hosepipe.
Report leaking pipes.
Avoid irrigating during the day, do it in the morning or evening.
make use of grey water to irrigate your garden.