Explain why discharge of untreated sewage into rivers and seas is harmful
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discharge of untreated sewage into rivers and seas is harmful because they pollute water or water bodies and decreases the level of fresh water.
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discharge of untreated sewage into rivers and seas is harmful in following ways-
1-the water of river or pond or lake is polluted.
2-it causes diseases like typhoid,cholera,etc.
3-mosquitoes breed in dirty water.and when it sits on our food,our food gets contaminated, which makes us sick.
4-mosquitoes also spread diseases like malaria.
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1-the water of river or pond or lake is polluted.
2-it causes diseases like typhoid,cholera,etc.
3-mosquitoes breed in dirty water.and when it sits on our food,our food gets contaminated, which makes us sick.
4-mosquitoes also spread diseases like malaria.
HOPE IT HELPS YOU
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