Question

What advantage over an aquatic organism does a terrestrial organism have with regard to optaining oxygen for respiration?

Answer 1

aquatic organisms have to filter n use oxygen present in water n gets very less oxygen at a time...but we get comparatively more oxygen at a time. 

Answer 2

♤The amount of oxygen dissolved in water is fairly low as compared to the amount of oxygen present in air.

♤ the rate of breathing in aquatic organisms is much faster than that seen in terrestrial organisms.

♤ Fishes take in water through there mouth and force it past the gills where the dissolved oxygen is taken up by the blood.