Which is the site of actual diffusion of O2 and C02 between blood and atmospheric air?

Given statement is true or false Statement: Actual site of diffusion of O_(2) and CO_(2) between blood and atmospheric air is exchange part.

What are the function of the conducting pan the respiratory system? a. Transportation of the atmospheric air to the alveoli b. Clears atmospheric air from foreign particles c. Humidifles atmospheric air d. Brings the atmospheric air to body temperature e. Diffusion of O_(2)" and "CO_(2) between blood and atmospheric air

Which is the site of production of blood cells?