Presentation LITTLE ANGELS PUBLICE SCHOOL.pptx

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1. LITTLE ANGELS PUBLICE SCHOOL NAME---JANVI UPADHYAY CLASS--- 7 TOPIC NAME--- POLLUTION

2. POLLUTI O N The presence of harmful substance in enviornment like air , land and water is called pollution.

3. TYPES OF POLLUTION WATER POLLUTION SOIL POLLUTION AIR POLLUTION

4. WATER POLLUTION Water pollution is the release of substance into bodies of water that makes unsafe for human use and aquatic ecosystem.

5. SOIL POLLUTION Soil pollution is when there are harmful changes in soil due to adding of unwanted, harmful pollutants , such as trash and toxic chemicals

6. AIR POLLUTION Air pollution is a mixture of solid particles and gases in the air . Car, chemical from factories, dust may be suspended as particles. Ozone , a gas is a major part of air pollution in cities .

7. How to save our environment We should stop cutting down forests to our life ,atmosphere and homes of many different species . People should limit their use of electricity and use less fossil fuel to save the environment from global warming . They should promote the use of solar lights and wind energy to save destroying earth.