air pollution
TRANSCRIPT
In the name of GODBy
Salehe Sekandari
Air pollution
Air is the most immediately vital resource.
Pure air
78% Nitrogen
21% Oxygen
Less than 1% Argon
0.03% Carbon dioxide
Water vapor
Other gases
The percentage of oxygen in the air has not been reduced significantly with the advent
of air pollution.
For many years people have been
treating the atmosphere as a
sewer
,exhausting different kinds of waste
products into it.
Air pollution is the introduction of hazardous materials into the
atmosphere as the result of mans‘ activities.
pollutants in the air are mostly a result of: 1. human activities 2. natural phenomena
natural phenome
na
Smok from
forest fire
Dust storm
Hot spring
volcanoes
Human causes
industrial emissions
car exhaust
Smoke from
forest fire
Air pollution from World War II production
Smoke from forest fire
Dust storm approaching Stratford, Texas
Hot spring
volcanoes
We use a number from 1 to 10to indicate the level of local air quality.
1 2 3 4 5 6 7 8 9 10 +
Risk: Low (1 - 3) Moderate (4 - 6) High (7-10) Very high (+ 10)
four major air pollutants:
1. ozone
2. nitrogen dioxide (NO2)
3. sulphur dioxide (SO2)
4. Carbon monoxide (CO)
Some bad effects of air pollution on human
being:
1.Air pollution causes harmful physical changes in
the brain:
these changes are associated with
learning and memory problems and even depression.
2.Air Pollution Has Negative Effects on Heart Health:
air pollution can negatively affect the ability of the heart with serious
coronary artery disease .
3.Air Pollution Raises Blood Pressure:
The problems of air pollution is further complicated by existence
of inversion layers.
An inversion layer is a layer of warmer air over a cooler surface layer of air.
It results from:
1.Topographical character2.Proximity to water
specific vitamins may help protect your health from the
effects of bad air:
vitamins A and C benefited people who
were sensitive to air pollutants.
vitamins B6 and B12 help guard the Heart from the impact of air pollution
Over three million premature deaths
each year are caused by air pollution, according to the
World Health Organization (WHO).
Thanks for your
attention!