write the treatment of polluted water class 7
Answers
Answer:
Treatment of Polluted Water :
Fill a large glass jar 3/4 full of water. ...
Fill a large glass jar 3/4 full of water. ...Cap the jar, shake it well and let the mixture stand in the sun for two days.
Fill a large glass jar 3/4 full of water. ...Cap the jar, shake it well and let the mixture stand in the sun for two days.After two days, shake the mixture and pour a small sample into test tube. ...
Fill a large glass jar 3/4 full of water. ...Cap the jar, shake it well and let the mixture stand in the sun for two days.After two days, shake the mixture and pour a small sample into test tube. ...Use an aerator from an aquarium to bubble air through the sample in the glass jar.
Answer:
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