1. Presented by
Chander Kumar
Submitted To:
Prof: Rubina Safdar

2. Water is essential to life on earth.

3. Three forms of Water.
 Solids: When water becomes very cold
and freezes it will change from a liquid to
a solid. It has a definite form and shape.
 Liquids: When water takes the shape
of its container it is in a liquid form.
 Gases: When water is seen in a vapor
form and has no definite size or shape it
is in a gas form.

4. The earth's water supply
 97.2% of the Earth's water supply is
salt water.
 Only 2.8% is fresh water!
World Water Supply
97.200% salt water in the oceans
02.014% ice caps and glaciers
00.600% groundwater
00.009% surface water
00.005% soil moisture
00.001% atmospheric moisture

5. Earth as water planet
 Earth is often referred to as `the water
planet'.
 Earth is unique amongst planets of our
solar system because of its abundant
water - in oceans, in the atmosphere, in
glaciers and as fresh water on land.
 Without water, life could not exist.

6. Daily use of water

7. Sources of Water pollution
Fertilizers Domestic sewage
Some industrial wastes

8. River pollution
 Asian rivers are the most polluted in the
world.
 Three times as many bacteria from
human waste as the global average
 20 times more lead than rivers in
industrialized countries.

9. Plastic waste in water
Each year, plastic waste in water and
coastal areas kills up to:
 100,000 marine mammals,
 1 million sea birds, and
 countless fish.

10. Oil Pollution of water
 Largest source of oil pollution is pipeline
leaks and runoff
– 61% ocean oil pollution river & urban
runoff
– 30% intentional discharges from
tankers
– 5% accidental spills from tankers

11. Thank you