Q3.Correct the incorrect statements:
a) The closed tanks where primary treatment of waste water is done by breaking down of organic matter involving the action of aerobic bacteria is called aerobic tanks.
b) Water hyacinth is considered an excellent man-made cleanser
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1
Answer:
both are incorrect statements
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8
Answer:
The closed tanks where primary treatment of waste water is done by breaking down of organic matter involving the action of aerobic bacteria is called aeration tanks
Water hyacinth is considered an excellent natural cleanser
Explanation:
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