Refer to the figure showing various gas exchange systems.Recall that Fick's law of diffusion is Q = DA(P1 - P2) /L. 
The term D in the equation for Fick's law of diffusion depends in part on the _______, indicating that this term is higher for the diffusion of O2 in the organism(s) shown in _______.
A) medium; A and B because O2 diffuses faster in water than in air
B) medium; C and D because O2 diffuses faster in air than in water
C) area across which the gas is diffusing; C because it has the largest surface area for exchange of respiratory gases
D) the path length for diffusion; D because every cell is next to an air capillary
E) partial pressure of the gas that is diffusing; A and B because the partial pressure of O2 is higher in water than in air
Correct Answer:
Verified
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