2. Global Warming means the rise in the average
temperature of Earth’s atmosphere and oceans.

3. People should reduce the usage of electrical appliances
which emits green house gases. For e.g. the refrigerator
releases chlorofluro carbon (CFC) and the incandescent
light lamp emits 300 pounds of carbon dioxide a year.
This can be replaced by a compact fluorescent light bulb
which saves much energy.
Follow RRR - Reduce, Reuse, Recycle. People should
not dump waste products on the ground. Plant
products, food waste, vegetable dump undergoes
anaerobic decomposition i.e. they break down to
produce methane, a green house gas instead of
oxygen. Hence the product usage and wastage should
be reduced or recycled for a healthy atmosphere.

5.  Change in weather’s amount, intensity, frequency,
and type of precipitation.
 Climate change include instrumental temperature
record, rising sea level, and decrease snow cover in
northern hemisphere.

6. Restrict the use of cars to travel longer distances, you
can walk smaller distances or use a bicycle instead. This
will only limit the increase of carbon dioxide and carbon
monoxide in the atmosphere. You can also tune up your
car regularly to increase its fuel efficiency.
When it is time for a new car, select a more fuel-
efficient car. Check your car tires regularly to ensure
they are properly inflated, since that can improve the
fuel efficiency of the car to a greater extent.

7. Switch off the lights, fans and air conditioners when not
in use. Replacing your current tube lights and bulbs with
fluorescent lights is a smart way to increase energy
efficiency. They will also amount to huge energy savings
in your monthly electricity bills.
Minimize the use of deodorants, as they contain CFC
(Chlorofluorocarbon) that contributes to the ozone
depletion, which in turn gives rise to most destructive
effects. CFC is also used as refrigerants. You can go in for
a deodorant or a refrigerator that is CFC free.
Continue of how to prevent global warming …

9. The GREENHOUSE EFFECT is a process by
which thermal radiation from a planetary
surface is absorbed by atmospheric
greenhouse gases and is re-radiated in all
directions.

11. By their percentage contribution to the GREENHOUSE
EFFECT on the earth the four major gases are :
Water vapors , 36-70%
Carbon dioxide, 9-26%
Methane, 4-9%
Ozone, 3-7%
The major non-gas contribution to the earth’s
greenhouse effect , clouds also absorb and emit
infrared radiation and thus have an effect on
radiative properties of the atmosphere.

12. • A large body of ice moving slowly down a slope or
valley or spreading outward on a land surface.
•It is said that a glacier is a river of water in a solid
state; a mass of ice in constant movement with a
certain speed depending on the slope and volume.
•Glacier, any large mass of perennial ice that
originatates on land by the recrystallization of
snow or other forms of solid precipitation and
that shows evidence of past or present flow.

13.  Mountain glacier and snow cover had decreased in
both the northern and southern hemispheres.