This document discusses several environmental issues: - Global warming is causing rising world temperatures due to increased carbon dioxide levels. Air pollution from industry, vehicles and chemicals is making city air difficult to breathe. The ozone layer is being damaged, allowing more harmful radiation. - Water pollution occurs when large amounts of harmful substances are released into water bodies without treatment, endangering people, wildlife and habitats. It is a major global cause of deaths and diseases. - Deforestation is reducing forests and causing floods, lack of oxygen, species loss and soil erosion. The Amazon has lost over 170,000 square kilometers of rainforest.

2. Members
 Nguyễn Tấn Huy 1258023
 Ngô Thị Xuân Uyên 1258092
 Lê Hoàng Phương Anh 1 1258004
 Huỳnh Thanh Nguyên 1258023
 Phạm Hưng Thịnh 1258076

3. Introduction

4. Compare the pictures

5. Global Warming

6. Global Warming
is a general increase
in world
temperatures caused
by increased amount
of carbon dioxide
around the Earth.

7. Air pollution

8. Air pollution
The air in our towns
and cities is very
polluted with gases,
car fumes, smoke. It
is becoming more and
more difficult to
breathe.

9. The destruction of the ozone layer

10. The destruction of the ozone layer
The ozone layer is
damaged and it is
very dangerous for
our planet. The
ozone layer is a
layer of gases in the
sky that prevents
harmful radiation
from the sun from
reaching the Earth

11. Heavy traffic

13. Water pollution

14. Water pollution
 Water pollution occurs when harmful
substances are released into the water in
large quantities which cause damage to
people, wildlife, or habitat or indirectly into
water bodies without proper treatment to
remove harmful compounds.

15. Wastes

17. Effects of water pollution
 Water pollution is a major problem
in the global context. It has been
suggested that it is the leading
worldwide cause of deaths and
diseases, and that it accounts for
the deaths of more than 14,000
people daily.
 An estimated 700 million Indians
have no access to a proper
toilet,and 1,000 Indian children die
of diarrhea sickness every day.
Some 90% of China's cities suffer
from some degree of water
pollution, and nearly 500 million
people lack access to safe
drinking water.

18. Air Pollution
1. Causes:
Both human and natural actions

19. Natural events:
 forest fires
 volcanic eruptions
 wind erosion
 pollen dispersal
 natural radioactivity

20. Human activities that result in air pollution include:
 Emissions from industries and manufacturing
activities

22.  Burning Fossil Fuels
Fumes from car exhaust contain dangerous gases
such as carbon monoxide, oxides of nitrogen,
hydrocarbons and particulates.

23.  Household and Farming Chemicals
Crop dusting
Household
cleaning products
 Painting supplies
Over the counter
insect/pest killers
Fertilizer dust

24. 2. Effects
Human health

27.  Animals and plants
 Acid rain
 The atmosphere as whole

28. Global warming
Global warming and climate change are
terms for the observed century-scale rise
in the average temperature of the
Earth's climate system and its related
effects.
 2014 is the warmest year on record
since 1880

30. The effects of global warming are the
environmental and social changes caused
(directly or indirectly) by human emissions of
greenhouse gases.
Many impacts of climate change have already
been observed:
Melting ice or glacier retreat
Changes in the timing of seasonal events
Changes in agricultural productivity

34. Industrialization
Effect

35. Nuclear power

36. Effect of Fukushima disaster on
the Environment
 A large amount of radioactive cesium enters an
ecosystem
 Quickly becomes ubiquitous, contaminating water,
soil, plants and animals
 Produced the largest discharge of radioactive
material into the ocean in history

38. Number of Nuclear power plants in the
World

39. Deforestation

40. Effects
 Flood
 Lack of Oxygen => Green house effect
 Loss of species
 Soil Erosion

41. Amazon Deforestation
The area of Amazon
rainforest cleared rose
from 415,000 to
587,000 km2

42. Overfishing

43. Why is overfishing a problem?
• No time for recovery
• Fish populations collapsing
• Supply limited
(Koster, 2007)

44. Data About Extent of Problem

45. Cause of Overfishing
• mainly over-exploitation
(Jeantheau, 2005)

46. Impact on Environment
Low growth rates
Changes in species composition & biodiversity
Extreme changes to the ocean:
1. Degradation of reefs
2. Destruction to bottom grasses

47. Impact on Human Health
• Prevents heart disease and strokes
• Poverty countries depend on fish
• Omega-3 fatty acids
• Overfishing = all of the above gone

49. Japanese Whaling History
 Begun at 12h century
 On an industrial scale began around the
1890s
 During the 20th century, Japan was
heavily involved in commercial whaling
 International Whaling Commission (IWC)

51. Overhunting

53. Woolly Mammoths

54. Polar Beers

55. Caspian Tigers

56. Number left in wild in 2012

57. Solution

58. Act on climate
 Forego Fossil Fuels
 Consume Less
 Stop Cutting Down Trees
 One Child

59. Water crisis
 We rely on clean water to survive
 Dirty water is the world's biggest health risk