1. 3.1.3 : Natur al
Disaster

2. Floods
 Can cause
erosion and
landslides
 Destroy crops,
livestocks,
properties and
spreads disease

3. Drought
 Land hard and
dry
 Plants will die
and will disrupt
the food web

4. Volcanic eruption
 Choking
clouds of dust
and poisonous
gases
 Can cause
acid rain and
air pollution

5. Earthquakes
 Destroy building,
properties,
animals, plants
and people
 Can cause
tsunami,
hurricanes,
typhoons or
cyclones.

6. Tsunami

7. Hurricane

8. Typhoons

9. Cyclones

10. 3.2 T he Sour ce of
Environmental
Pollution

11. Sources of
environmental
pollution
 Uncontrolled used of fossil fuels
 Disposal of by-products, waste, toxic
substance, radioactive substance,
smoke and heat from factories
 Uncontrolled use of chemical
fertilizers, pesticides and fungicides
in agriculture

16. Sources of
environmental
pollution
 Production of noises, smoke and
poisonous gases from vehicles
and machinery
 Disposal of rubbish and sewage
 Use of chlorofluorocarbon (CFC)

19. Effects of
environmental
pollution
 Human health
 Loss of habitat and change in natur
 Extinction of species
 Loss of economic resources

24. The Greenhouse
Effect
Natural heating process that
occurs when certain gases
(greenhouse gases) in the
Earth’s atmosphere trap heat.

25. Greenhouse
gases
 Carbon dioxide – main
greenhouse gas which come
from the burning of fossils
fuels and deforestation
 Methane, chlorofluorocarbon
(CFC), ozone and nitrogen
oxides.

27. Global Warming
 Average global temperature of Earth
is rising
 This could cause extensive melting
ice caps and glaciers and raise sea
levels
 It will change weather patterns and
effect agricultural output.

29. The Ozone Layer
 Ozone layer contains a high
concentration of ozone and serves
to shield living organism from the
Sun’s harmful energy
 Ozone absorbs most of the
ultraviolet radiation that enters the
atmosphere.

31. Coolant
Refrigerators
Air-Conditioner
CFC’s
Propellants Styrofoam
Spray cans/
aerosols

33. Effect of Ozone
Depletion
 Irritation of eyes, throat and lung cancer

34.  Reduce the yield of crops

35.  Sunburn

36.  Skin cancer

37.  Cataract

38.  Mutation - Down’s Syndrome

39.  Impairs crop and tree growth
 Kill phytoplankton that sustain oceanic
life

41. The Idea of Preservation and
Conservation of the
Environment and Pollution
Control
 Preservation
 To keep something the same or
prevent it from being damaged.
 Conservation
 Carefully using valuable natural
resources that they will be
available for as long time as
possible

42. The Importance of Proper
Management of Natural
Resource
 Forest reserve
 Develop new technology of fisheries
 Monitor an opening of a new land
 Carried out mining activities
systematically