Freshwater animals exert large amounts of energy to transport water from their tissues back to the outside because they are hypertonic to their surroundings.

Question

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Hypertonic animals have a higher concentration than their surroundings. In this case, water would try to flow into an animal to reach some kind of equilibrium. Information can be found in the section Marine Life Success Depends upon Physical and Biological Environmental Factors.

Freshwater Animals Exert Large Amounts of Energy to Transport Water