Which outcome impairs osmoregulation when a freshwater fish suffers gill damage?

💡 Explanation

When gill damage occurs, disrupted epithelial cells cause impaired active transport maintaining ion levels because regulatory mechanisms are disrupted in the gills, leading to increased ion loss which will result. Therefore, increased ion loss occurs, rather than issues directly affecting ammonia excretion, oxygen uptake, or carbon dioxide levels, which rely on related but distinct systems.

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