give some way to keep our surroundings clean? plz guys don't comments and give short answer.
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1 drinking water should be chlorinated. periodically
2 people should not allowed to spit or defecate in the open
3 preservative method to control pollution should be followed .
2 people should not allowed to spit or defecate in the open
3 preservative method to control pollution should be followed .
prya8523:
tp
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