Final answer:
The advantage to having air at high temperature passing through a net is increased density, which increases the rate of diffusion into the blood.
Step-by-step explanation:
The advantage to having air at high temperature passing through a net is increased density. Hot air is less dense than cold air because the components of hot air are moving more rapidly. This increase in density would increase the rate of diffusion into the blood because it reduces the difference between the partial pressures of the air and blood.