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Eutrophication is caused by:
APure water
BExcess nutrients (N, P) in water bodies
CSalt water only
DCarbonated drinks
Answer & Solution
Correct answer: B. Excess nutrients (N, P) in water bodies
1. Eutrophication = nutrient over-enrichment.
2. N and P from fertilisers, sewage stimulate algal blooms.
3. Hence option B.
_Source: UGC NET Paper 1 Study Book (ugc-net.com class notes) — Water Pollution_