Question

A) Oxygen
C) Nitrogen
during respiration is
7. The chalky-acid air formed in lungs
8. From pharynx the air goes into a
B) Carbon dioxide
D) None of these
(
B) Carbon dioxide
D) Water vapour
.
B) Trachea
D) Lungs
A) Oxygen
C) Nitrogen
A) Larynx
c) Nasal cavity
2.​

Answer 1

Answer:

A ka answer oxygen 7.and.8ka answer co2