Water having Dissolved Oxygen (DO) below is considered polluted. (a) \( 8 \mathrm{mg} / \mathrm{...

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Water having Dissolved Oxygen (DO) below is considered polluted.
(a) \( 8 \mathrm{mg} / \mathrm{L} \)
(b) \( 80 \mathrm{mg} / \mathrm{L} \)
(c) \( 70 \mathrm{mg} / \mathrm{L} \)
(d) \( 95 \mathrm{mg} / \mathrm{L} \)
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