Why is fisheries sustainable in the economic role of rivers only when water quality is good?
Answer and explanation
Correct answer: Because polluted water harms fish habitats, breeding and survival
Good water quality provides adequate dissolved oxygen, fewer toxic pollutants and a suitable aquatic habitat. This supports fish survival and breeding, allowing fisheries to provide income over the long term. In contrast, polluted water can reduce oxygen and introduce harmful substances, lowering fish populations. Exam tip: link fisheries with river health, livelihoods and water pollution.
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What is the correct answer to this question?
Because polluted water harms fish habitats, breeding and survival
Why is this the correct answer?
Good water quality provides adequate dissolved oxygen, fewer toxic pollutants and a suitable aquatic habitat. This supports fish survival and breeding, allowing fisheries to provide income over the long term. In contrast, polluted water can reduce oxygen and introduce harmful substances, lowering fish populations. Exam tip: link fisheries with river health, livelihoods and water pollution.
Which subject and chapter does this question cover?
This is a Class 9 Geography question. Chapter: Drainage. Topic: Role of Rivers.
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