7. Which air is used in
respiration?
a) Water vapour
b) Carbon dioxide
c) Oxygen d) Nitrogen
Answers
Answered by
1
Explanation:
Exhaled air which contains: more carbon dioxide produced as a waste product of energy production. less oxygen as it has been used in respiration.
...
Inhaled and exhaled air.
Gas % in inhaled air % in exhaled air
Oxygen 21 16
Carbon dioxide 0.04 4
Nitrogen 79 79
Answered by
1
Answer:
c) Oxygen. while inhalation oxygen rich air is taken in which is useful for respiration
Similar questions