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Anonymous

Asked: May 27, 20222022-05-27T13:50:10+05:30 2022-05-27T13:50:10+05:30In: Environment

The water pollution in river is measured by the dissolved amount of:

0%(a) Chlorine ( 0 voters )

0%(b) Ozone ( 0 voters )

100%(c) Oxygen ( 1 voter )

0%(d) Nitrogen ( 0 voters )

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