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Why is DO content low after thermal pollution?

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प्रश्न

Why is DO content low after thermal pollution?

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उत्तर

Higher water temperature reduces the solubility (dissolution rate) of oxygen in water. Hot water discharged from power plants raises water temperature, decreasing DO. Also, hot water increases microbial activity which consumes more oxygen.

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अध्याय 20: Environmental Issues - EXERCISES [पृष्ठ ११६०]

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सरिता अग्रवाल Biology [English] Class 12 ISC
अध्याय 20 Environmental Issues
EXERCISES | Q II. 15. | पृष्ठ ११६०
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