This presentation is prepared on AIR POLLUTION AND WATER POLLUTION as a part of science unit for the students of the grades 4th to 8th. All Slides are prepared with a very Simple and clear language so that students can digest concept smoothly. A step by step explanation is given from basic concepts to methods of its prevention.
This unit covers the following topics:
What is pollution?
Air pollution and its causes
Air pollutants and their harmful effects
What is green house effect?
Causes of green house effect
Methods to control air pollution
Importance of water
What is water pollution?
Signs to measure the presence of pollutants in water
Causes of water pollution
Purification process of water
Filtration, boiling and chlorination
Major sources of water pollution
Treatment on polluted water
Conservation of water
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