The document discusses our environment and environmental pollution. It defines the environment as consisting of living organisms, physical surroundings like soil, atmosphere and water bodies. It then discusses ecosystems and food webs. It defines pollution as the introduction of contaminants that harm the environment. It provides details on water pollution from various sources like industrial and agricultural waste. It also lists the natural and man-made causes of air pollution like vehicle emissions, industrialization and burning of fossil fuels. Finally, it discusses depletion of the ozone layer due to CFCs and the dangers this poses by allowing more UV rays to reach the Earth's surface.

1. OUR ENVIRONMENT

2. OUR ENVIRONMENT
MADE BY – Arun Pillai
X-D
MADE BY – MANAS AND ARUN X-D

3. OUR ENVIRONMENT
CONSISTS OF
LIVING
ORGANISMS
PHYSICAL
SURROUNDINGS
SOIL(LAND)
MICROORGANISMS
ATMOSPHERE
WATER BODIES
PLANTS AND
ANIMALS
DECOMPOSERS

5. ECOSYSTEM

9. FOOD WEB

10. ENVIRONMENTAL
POLLUTION

11. POLLUTION
Pollution is the introduction of
contaminants into a natural
environment that causes instability,
disorder, harm or discomfort to
the ecosystem i.e. physical systems or
living organisms.

12. Water Pollution
– Contamination of water by addition of
undesirable organic, inorganic or biological
substances to water sources
– Natural sources: soil erosion, leaching of
minerals from of rocks and decay matter.
– Industrial effluents
– Destroys ecosystem and effects human health

13. Sources of water pollution
• Community waste waters
• Industrial wastes
• Agricultural sources
• Under ground water pollution

14. Causes of air pollution
1.Natural sources
 Volcanic eruptions
 Forest fires
 Pollen grains of flowers
2.Man-made sources
 Increase in pollution
 Deforestation
 Burning of fossil fuels and fires
 Emission from vehicles
 Rapid industrialization
 Wars

16. OZONE LAYER

17. HOW IS OZONE LAYER GRTTING
DEPLETED?
• The decrease in the ozone layer is closely linked to
the synthetic chemicals called CFCs
(Chlorofluorocarbons ) which are used in sprays,
refrigerants and fire extinguishers.
The depletion of the ozone will allow the UV rays to
reach earth’s surface causing destruction to life.

18. DEPLETION OF THE OZONE