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What may happen if untreated industrial waste is discharged into a river?

Answer and explanation

Correct answer: Water pollution will increase

The governing concept is water pollution caused by the discharge of harmful substances into a water body. Untreated industrial effluent may contain toxic chemicals, heavy metals, suspended solids, acids, or organic matter. After entering a river, these substances can lower water quality, harm aquatic plants and animals, and sometimes reduce dissolved oxygen when microorganisms decompose organic pollutants. Therefore, option A is correct because untreated discharge increases water pollution. Option B is opposite to the expected effect. Option C is also incorrect because pollution often reduces, rather than increases, oxygen available to aquatic organisms. Option D is unrelated to waste treatment and river pollution.

Related tags

Industrial WasteWater PollutionRiver PollutionAquatic EcosystemsHumidityEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereGeography

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