NEET Biology question

Not in NEET syllabus

A higher biochemical oxygen demand in a particular segment of a river indicates that

(A)The segment is free from pollution
(B)The segment is highly pollutedCorrect
(C)Aquatic life has started flourishing
(D)The river has a high number of aquatic animals

Answer: (B)

Solution

A higher Biochemical Oxygen Demand (BOD) indicates a greater load of biodegradable organic matter requiring microbial decomposition, consuming more dissolved oxygen — this is characteristic of a

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Question ID VK-130294