Which process occurs when freshwater fish enter seawater?

💡 Explanation

Osmosis causes water to move from low to high solute concentration; because seawater is hypertonic relative to the fish's cells, the fish loses water by osmosis. Freshwater fish maintain internal ion concentration, therefore the fish dehydrates rather than gains needed electrolytes.

• Which outcome characterizes optimal foraging strategies when predators use territory maps?
• Which outcome occurs when migrating birds exhibit abnormal air sac volume regulation during high altitude soaring?
• Which mechanism causes schooling fish to swim with synchronized movements during predator avoidance?
• Which developmental constraint arises when damage occurs to imaginal disc cells in fly larvae?
• If a mutation disables larval-expressed caspase production, what altered outcome impacts imaginal disc development?
• Which process triggers increased mitochondrial UCP1 production during arousal from hibernation?