Gas exchange is more difficult for aquatic animals with

Last updated: 7/16/2022

Gas exchange is more difficult for aquatic animals with gills than for terrestrial animals with lungs because CHECK ALL THAT WOULD APPLY water contains much less O2 per unit volume than air water is denser than air gills have less surface area than lungs. water contains much more O2 per unit volume than air gills allow water to flow in one direction.