Threats to the environment

1. Presenter: Hoang Thi Lien

2. Environmental pollution.Environmental pollution.
The ongoing development of the economy and the
population did increase pollution of land, water, air
and environment.

3. Causes of air pollution.Causes of air pollution.
-Air pollution is caused by a wide variety of things. The earth is great at cleaning the air on its -Air pollution is caused by a wide variety of things. The earth is great at cleaning the air on its
own. However, air pollution has grown so much, the earth can no longer clean all of it. own. However, air pollution has grown so much, the earth can no longer clean all of it.
This is starting to have adverse effects on the environment such as causing acid rain, This is starting to have adverse effects on the environment such as causing acid rain,
smog and a wide variety of health problems.smog and a wide variety of health problems.
-Cars, trucks, jet airplanes and other combustion engine vehicles cause air pollution. The -Cars, trucks, jet airplanes and other combustion engine vehicles cause air pollution. The
exhaust from these contains carbon monoxide, nitrous oxide and gaseous oxide. This exhaust from these contains carbon monoxide, nitrous oxide and gaseous oxide. This
type of air pollution creates smog (as seen in Los Angeles) which causes respiratory type of air pollution creates smog (as seen in Los Angeles) which causes respiratory
health problems and holes in the ozone layer, which increases the exposure to the sun's health problems and holes in the ozone layer, which increases the exposure to the sun's
harmful rays.harmful rays.
-Factories, office buildings, homes and power-generating stations burn fossil fuels, which -Factories, office buildings, homes and power-generating stations burn fossil fuels, which
cause air pollution. The burning of oil and coal (fossil fuels) also contributes to smog. This cause air pollution. The burning of oil and coal (fossil fuels) also contributes to smog. This
air pollution destroys plants, damages buildings and creates oxidation on iron.air pollution destroys plants, damages buildings and creates oxidation on iron.
-Petroleum refineries release hydrocarbons and various particulates that pollute the air.-Petroleum refineries release hydrocarbons and various particulates that pollute the air.

4. As in the As in the
cities and cities and
also in also in
rural rural
areas, areas,
pollution pollution
levels are levels are
increasingincreasing
, likely to , likely to
get the get the
higher higher
respiratorrespirator
y diseasesy diseases

5. •Cars, trucks, jet airplanes and other Cars, trucks, jet airplanes and other
combustion engine vehicles cause air combustion engine vehicles cause air
pollution.pollution.

6. 4.     Radiation Pollution:  The WIPP Site4.     Radiation Pollution:  The WIPP Site
•Generally, one thinks in terms of a nuclear war when considering Generally, one thinks in terms of a nuclear war when considering
pollution that involves radiation. There are many other sources of pollution that involves radiation. There are many other sources of
radiation pollution. New Mexican's in 1988, for example, have been radiation pollution. New Mexican's in 1988, for example, have been
expressing concern over the expressing concern over the WIPP SiteWIPP Sitethat will be used to store that will be used to store
low-level nuclear waste. Radioactive waste is especially troublesome low-level nuclear waste. Radioactive waste is especially troublesome
because some of it has to be secured for up to 250,000 years. This because some of it has to be secured for up to 250,000 years. This
period of time represents about one fourth of the entire time that period of time represents about one fourth of the entire time that
humans have been considered as a separate species  Eitzen humans have been considered as a separate species  Eitzen
(1986:99).(1986:99).
•Radioactive waste includes:Radioactive waste includes:
•used nuclear coresused nuclear cores
•uranium tailingsuranium tailings
•waste generated by hospitals, universities, and industrial plants.waste generated by hospitals, universities, and industrial plants.

8. •Solid Waste Solid Waste
PollutionPollution
•As a result of waste As a result of waste
dumped in the dumped in the
Atlantic Ocean, Atlantic Ocean,
"Swimming in the "Swimming in the
Atlantic Ocean (on Atlantic Ocean (on
the North-East coast the North-East coast
of the U.S.) is like of the U.S.) is like
swimming in an swimming in an
unflushed toilet" unflushed toilet"
(CNN report, 7-30-(CNN report, 7-30-
88). Also See 88). Also See
(Eitzen, 2000:83-84) (Eitzen, 2000:83-84)
for more on the for more on the
subject of solid subject of solid
waste pollution.waste pollution.

9. - Pesticides- Pesticides
Pesticides used to kill indoor and outdoor pests, insecticides used to kill insects Pesticides used to kill indoor and outdoor pests, insecticides used to kill insects
and herbicides use to kill weeds all cause air pollution.and herbicides use to kill weeds all cause air pollution.
- Fertilizer Dust- Fertilizer Dust
Dust from fertilizers used to help plants grow causes air pollution.Dust from fertilizers used to help plants grow causes air pollution.

10. •DeforestationDeforestation

11.       Water PollutionWater Pollution
1.1.industries (which pour a variety of nasty substances into lakes, industries (which pour a variety of nasty substances into lakes,
streams and the ocean)streams and the ocean)

12. •2.2.Cities dispose Cities dispose
of their waste in of their waste in
rivers (that often rivers (that often
serves as serves as
drinking water).drinking water).
•3.There are also 3.There are also
oil and other oil and other
chemical spills.chemical spills.

13. •4. 4. Cities Cities
dispose dispose
of their of their
waste in waste in
rivers rivers
(that (that
often often
serves serves
as as
drinking drinking
water).water).

14. SolutionSolution
1.1.Prescribed places Prescribed places
disposal garbagedisposal garbage

17. •Mét s¬ ®å t¸i chÕ.Mét s¬ ®å t¸i chÕ.

20. The end.The end.