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Page 25
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Air Pollution
Mixing of harmful particles in air, is called air pollution . Smoke
emitted by vehicles and factories is the main cause of air pollution.
We should plant more and more green plants to reduce air pollution.
We should minimize the use of vehicles.
Time to Think
Time to Think
Time to Think
Green plants absorb harmful pollutants from air and keep it clean.
KEY
Land Breeze : Cool air blown from land towards sea.
Sea Breeze : Cool air blown from sea towards land.
Glider : It is an aircraft without an engine which flies by floating on air
currents.
Pollutants : Unwanted particles that pollute air.
Book-1 # 25

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