Environment problems

1
ENVIRONMENTAL PROBLEMS
2
(No Transcript)
3
(No Transcript)
4
ENVIRONMENTAL PROBLEMS
5
(No Transcript)
6
(No Transcript)
7
(No Transcript)
8
(No Transcript)
9
(No Transcript)
10
(No Transcript)
11
(No Transcript)
12
(No Transcript)
13
Human Impact On The Environment
ALL AREAS OF THE WORLD LAND WATER AIR
14
(No Transcript)
15
(No Transcript)
16
Deforestation
17
(No Transcript)
18
WHAT HAPPENS WHEN RULES ARE BROKEN
We pollute the air ? We change the climate We
throw away plastics bottles ? We damage the
nature We leave litter in the forests ? We hurt
animals We throw litter in the river ? We cause
water pollution
19
DEFORESTATION
The process whereby natural forests are
cleared through logging and burning
20
What is the extent of deforestation?

• - 15 MILION HECTARES
• OF FOREST
• LOST EACH YEAR

21
36
22
What are the effects of deforestation?
Reduced biodiversity
Forests ? natural habitats to many types of
animals and organisms Trees offer many
benefits to species ? they provide camouflage,
resources and safe homes
23
Deforestation ? wildlife is deprived of habitat
? results in the extinction of many species
There are millions of plant and extinct animal
species
Deforestation ? puts at risk a majority of the
earths biodiversity
24
Giant panda
25
koalas
26
SIBERIAN TIGER
27
LEOPARD
28
THE GREAT WHITE SHARK
29
POLAR BEAR
30
(No Transcript)
31
WATER POLLUTION

v Water covers over 75 of our planet
v Olny 2.5 of the water on the earths surface
is freshwater
v Less than 1 of the worlds freshwater is
found in lakes and rivers
32
v Many lakes and rivers are considered polluted
WATER POLLUTION IS THE WORLDWIDE LEADING CAUSE
OF DEATHS
It accounts for over 14,000 deaths daily
33
TYPES OF WATER POLLUTION
Visible types of garbage ? PLASTICS
ITS EVERYWHERE ? MOST OF IT IS NOT BIODEGRADABLE
34
PLASTICS
Affects the marine ecosystem for
decades Killing seals and fish, who often
mistake it for food
35
TYPES OF WATER POLLUTION
By sewage
36
sewage
Contamination by bacteria ? diseases
Causing 1.8 milion human deaths annully
37
TYPES OF WATER POLLUTION
Chemical waste Mercury, oil,
pesticides ? extremely dangerous to animal
life
38
FISH CONTAMINATED ? BIRDS
? HUMANS
CONTAMINATED
FOOD CHAIN
39
AIR POLLUTION
Introduction of chemicals into the atmosphere
that harm v human, v animal, and v
plant health
40
AIR POLLUTION
Cancer Asthma Respiratory diseases
41
AIR POLLUTION CAUSES
Motor vehicles release chemicals in the form of
exhaust fumes
Harmful to the environment
42
AIR POLLUTION
CAUSES
Many industries release a lot of fumes ? harmful
for the environment
43
AIR POLLUTION
CAUSES
Natural sources
v Forest fire v Volcanic eruption
44
AIR POLLUTION
CAUSES
Fumes from spray cans, refrigerators, air
conditioners
Nuclear weapons
45
EFFECTS OF AIR POLLUTION
46
Global warming Greenhouse effect
There are few gases in the atmosphere
Carbon dioxide, Methane, Nitrous Oxide
Greenhouse gases
47
Greenhouse effect
When energy from the sun reaches the Earth, some
is absorbed into the Earth's surface, and the
rest is reflected back into the atmosphere.
Greenhouse gases absorb some of this radiation
and prevent its release
,
48
Greenhouse effect
Essential to life on earth ? earth would freeze
49
GLOBAL WARMING
We are increasing the amount of these greenhouse
gases
Most come from cars, factories, electricity
production, Deforestation
50
GLOBAL WARMING
Temperature is increasing Earth is becoming
warmer
51
GLOBAL WARMING
The gas responsible for the most warming is
CO2
We are cutting tress ? Less plants ? absorb
greenhouse gases
52
GLOBAL WARMING
EFFECTS
v Rising Sea Levels
v Severe Climate Changes
v More killer storms
53
GLOBAL WARMING
EFFECTS
v Melting ice in glacial areas
v Extinct wildlife
54
EFFECTS OF AIR POLLUTION
v Depletion of the ozone layer
Ozone layer ? protects the earth from
ultraviolet rays
Refrigerators, Air conditioners, aerosol sprays
release CFCs gases
55
EFFECTS OF AIR POLLUTION
Depletion of the ozone layer
Lead to the formation of holes in the Ozone layer
?
Let the UV rays of sun reach the earth
?
Health problems for humans
56
HOW CAN WE HELP ?
57
(No Transcript)
58
HOW TO STOP DEFORESTATION?
v Recycle
Recycling a ton of paper
v Buy products ? made from recycled materials
v Plant trees
59
WATER POLLUTION WHAT CAN YOU DO ?
v stop!!! throwing garbage in water ,
v Use environment friendly detergents

v put your cooking oils in plastic bottles
and take them to recycle
60
WATER POLLUTION WHAT CAN YOU DO ?
v Save water at home
v Dont turn on your water while you are brushing
your teeth
v Don t take too long in the shower
v Reuse rainwater
61
REDUCE GLOBAL WARMING WHAT CAN WE DO ?
v Reduce the use of electrical appliances
v Use the rule of RRR in your life
v reduce the wastage of energy
62
REDUCE GLOBAL WARMING WHAT CAN WE DO ?
v Plant more trees greenhouse effect
A single tree will absorb approximately one ton
of carbon dioxide during its lifetime
63
REDUCE GLOBAL WARMING WHAT CAN WE DO ?
v Drive less. Take bikes, walk or carpool
whenever possible
v Use renewable energy like solar energy
64
Help reduce global warming