Question

compare air and water as respiratory media

Answer 1

Answer:

Explanation:

So far all I have is that air has a 21% oxygen content compared with water which has less than 1%.

The total surface of the gills is often greater than the total body surface of the animal. There are some problems with getting the oxygen gas from water versus air. Oxygen concentration is much lower in water than in air and the warmer and saltier the water the less dissolved oxygen it holds.