Question

what advantages over an aquatic organism does in a Terrestrial organism have with regard to obtaining oxygen

Answer 1

Either aquatic animal should have Gill to inhale dissolved oxygen from water or it should come to surface for breathing. Terrestrial animal can breath without any problem on land

Answer 2

Aquatic organisms use oxygen dissolved in surrounding water . Since air dissolved in water has fairly low concentration of oxygen , the aquatic organisms have much faster rate of breathing .

Terrestrial organisms take oxygen from

the oxygen-rich atmosphere through

respiratory organs . Hence , they have

much less breathing rate than aquatic

organisms .