1. WELCOME
A
SESSION
ON
GLOBAL
WARMING

2. CONTENTS
Definition
Causes
Effects
Prevention
Thanks

3. DEFINITION
Global warming
is the observed
and projected
increases in
the average
temperature of
Earth's
atmosphere
and oceans.

4. CAUSES
Carbon dioxide(CO2)
emissions.
Catastrophic
changes in the
environment take
place when the
concentration of
CO2 reaches the
level of about 450
ppm.

5. EFFECTS
Increase of temperature
on the earth by about
3°c to 5°c by the year
2100.
Rise of sea levels by 25
meters (82 feet) by the
year 2100.
Melting of Glaciers and
Polar ice.
Increase of weather
events and natural
disasters like Droughts,
Floods, Tornadoes, etc.

6. PREVENTION
Use
to reduce
CO2 .
Every one should
Make
to save water.
Use to
replace electricity and
fuel.
&
protect our

7. THANKS
Thank
You.
Bishweashwar Shukla.
Vanasthali Public School,
Class-VI(B), Roll No-7,
Nilgiri House,
Mayur Vihar-III, Delhi-96.