4. The presence of any gas
becomes threat to health
whether in higher or smaller
amounts and if new gases are
added to the atmosphere, it is
called air pollution
5. ACID RAIN
The carbon dioxide in the air mixes with
the water vapors and carbonic acid is
formed . When the quantity of carbon
dioxide in the atmosphere increases , the
intensity of the acid rain also increases . It
causes problems for the kidneys ,
weakening of bones and affects the
growth .
6. GREENHOUSE EFFECTS
The gases like carbon dioxide and
Methane, and water vapour found in
the atmosphere play an important
role in the regulating the temperature
. These are green house gases .The
glass houses used in cold regions to
grow plants are known as green
houses.
7. The increase in the
average temperature
near the surface of the
earth is global warming
8. CAUSES OF GLOBAL WARMING
Carbon dioxide and Methane
Increase in the number of vehicles
Greenhouse gases
CAU
Industrialization
Deforestation
Increase the population
9. OZONE DEPLETION
The sprays, paints and other
articles we use release CFC and
these gases are agent which
causes destruction of the
ozone layer .The depletion
caused to the ozone layer is
called the ozone hole.
10. PROBLEMS CAUSED BY THE OZONE
DEPLETION
•Change in climate .
•Destruction to agriculture and
forest.
•Increase in the incident of skin
cancer.
