Which of the following nutrients are added to improve fish culture?
A
NO−3 and SO2−4
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B
PO3−4 and NO−3
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C
SO2−4 and I2
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D
Both A and B
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Solution
The correct option is D Both A and B Fish culture is the artificial propagation and breeding of fish. Worldwide, the most important fish species used in fish farming are carp, salmon and catfish. Fish culture is improved by super phosphates, ammonium nitrate and ammonium sulphate.