Name: Class IV
Uploaded: 2022-02-08
Duration: 1 min 8 s
Description: Class IV. Chapter-14 Keeping Our Earth Green and Clean.

Class IV. Chapter-14 Keeping Our Earth Green and Clean. 

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Chapter-14  Keeping Our Earth Green and Clean

Pollution. The addition of harmful substances in air , water and soil that cause harm or discomfort to human beings and other living organisms.. 

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The addition of harmful substances in air , water and soil that cause harm or discomfort to human beings and other living organisms.

Pollutants. The harmful substances that cause pollution.. 

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The harmful substances that cause pollution.

Water Pollution. The addition of harmful substances into water bodies like lakes, rivers and oceans.. 

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The addition of harmful substances into water bodies like lakes, rivers and oceans.

Effects: contains harmful micro-organisms.  Causes diseases like dysentery,  diarrhoea  and typhoid.

Causes of water Pollution. Washing clothes and utensils in rivers ,lakes etc Addition of soaps detergents and other chemicals Garbage thrown by people Bathing of animals. 

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Washing clothes and utensils in rivers ,lakes etc Addition of soaps detergents and other chemicals Garbage thrown by people Bathing of animals

Measures to keep W ater B odies Clean. Don’t Wash clothes and utensils in rivers , lakes etc Don’t throw Garbage into water bodies. Don’t Bath animals in water bodies Waste water from factories and sewage from homes must be treated before letting them flow into waterbodies .. 

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Don’t Wash clothes and utensils in rivers , lakes etc Don’t throw Garbage into water bodies. Don’t Bath animals in water bodies Waste water from factories and sewage from homes must be treated before letting them flow into  waterbodies .