Which process limits freshwater fish survival during sudden saltwater intrusion events?

💡 Explanation

During saltwater intrusion, extreme osmotic dehydration occurs because surrounding hypertonic environment causes rapid water loss through gills and skin, overwhelming freshwater fish's osmoregulation capabilities. Therefore osmotic dehydration results, rather than chloride cell activation, disrupted filtration, or compromised oxygen absorption, which are less immediate osmotic responses.

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• Which consequence results when peripheral vasodilation exceeds the available hypothalamic hormones?
• Which risk increases when a soaring bird remains aloft during rapid cloud formation?
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