Gas Exchange Takes Place by the Physical Process of Diffusion

Gas exchange takes place by the physical process of diffusion.Use the diagram to describe where diffusion is occurring and what gases are diffusing. Identify and describe what type of respiration involves the lungs (A)and what type involves the tissue fluids (B).
A: ________ Respiration
B: ________ Respiration
Describe what is occurring,in terms of gaseous exchange,at C,D,E and F.
C: ________
D: ________
E: ________
F: ________