Question

what advantages over an aquatic organisms does a Terrestrial organism have with regard to obtaining oxygen for respiration?

Answer 1

Terrestrial organisms have lungs for lungs for breathing which can gain more and more oxygen than gills which obtains oxygen simontaniously.

Answer 2

Aquatic animal, such as fishes , obtain oxygen for respiration which is dissolved in water . The amount of oxygen dissolved in water is very low . On the other hands , the terrestrial organisms take oxygen directly from the air .