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Nature & Animals

Which risk increases when a freshwater fish's gills suffer chloride cell damage?

A)Ammonia toxicity from impaired excretion
B)Dehydration due to increased water loss
C)Hypothermia from disrupted countercurrent exchange
D)Starvation due to inhibited nutrient transport

💡 Explanation

When chloride cells are damaged, active ion transport is impaired because these cells actively uptake ions from the freshwater, a critical process also adjacent for ammonia excretion. Therefore ammonia toxicity risk increases, rather than dehydration, hypothermia, or starvation which depend on different physiological mechanisms.

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