and 
) across
alveolar membrane.
(b) Transport
of gases by blood.
(c) Utilisation
of by the
cells for catabolic reactions and resultant release of .
(d)
Pulmonary ventilation by which atmospheric air is drawn in and rich
alveolar air is released out.
(e) Diffusion of and between
blood and tissues.
Answer:
(d) Pulmonary
ventilation by which atmospheric air is drawn in and 
rich
alveolar air is
released out.
(a) Diffusion
of gases (
and ) across
alveolar membrane.
(b) Transport
of gases by blood.
(c) Diffusion
of and between
blood and tissues.
(d) Utilisation of by the
cells for catabolic reactions and resultant release of .
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