हिंदी

How are open drains harmful for human health?

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प्रश्न

How are open drains harmful to human health?

लघु उत्तरीय
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उत्तर

 Open drains are harmful to human health

  1. Open drains have a foul smell and by that, they cause air pollution.
  2. Mosquitoes and flies mostly breed in dirty water or areas and in open water.
  3. Humans are infected with water-borne diseases such as cholera, typhoid and diarrhoea, as open drains infect clean water.
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अध्याय 18: Wastewater Story - VERY SHORT ANSWER QUESTIONS [पृष्ठ ९५]

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एनसीईआरटी एक्झांप्लर Science [English] Class 7
अध्याय 18 Wastewater Story
VERY SHORT ANSWER QUESTIONS | Q 13. | पृष्ठ ९५
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