Terrestrial animals breathe oxygen directly from the atmosphere, while aquatic animals must use:
Question
Terrestrial animals breathe oxygen directly from the atmosphere, while aquatic animals must use:
Oxygen trapped in mud
Oxygen dissolved in water
Carbon dioxide from water
Nitrogen dissolved in water
Answer
Oxygen dissolved in water
Detailed Explanation
Animals living in water need to use the oxygen that is dissolved in the water, unlike terrestrial animals that use atmospheric oxygen directly. — Examisthan.com