Marine fish must use energy to maintain their body fluid balance,because
A) they live in a hypertonic environment and need to use energy to retain water.
B) they must get rid of the excess water that constantly moves into their interstitial fluid.
C) they must actively take up solutes from their surroundings.
D) their kidneys must reabsorb solutes from the external surroundings.

Question

Quizplus · Accepted Answer

Marine fish live in a hypertonic environment, meaning the concentration of solutes outside their cells is higher than inside their cells. To avoid losing water to the environment, they must actively expend energy to actively retain water.

Marine Fish Must Use Energy to Maintain Their Body Fluid