Wastewater Story Class 7 Extra Questions

CBSE Wastewater Story Class 7 Extra Questions

Water is vital for life. Earth is the only place in the universe where life exists and the main reason for this is the presence of water on the earth. Earth is called the “water planet” because 80% of its surface is covered with water or ice. 22 March has been declared as “World Water Day”. The General Assembly of the United Nations proclaimed the period 2005–2015 as the International Decade for action on “Water for life”.Wastewater is the water that has been adversely affected in quality by the waste materials. Waste materials are released from industries, households, and agriculture. Sewage is wastewater having dissolved and suspended imp purities released from homes, industries, hospitals, offices, and other users. Please refer Wastewater Story Class 7 Extra Questions for more information.

Wastewater Story Class 7 Extra Questions

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