Question

Fill in the blanks
a) ---------+is a physical process that involves exchange of gases.
b) The air you exhale contains more of ---------
c) --------------is the muscular sheet below the ribcage.
d) During inhalation, the diaphragm moves------------
e) Lungs are situated in the ---------------​

Answer 1

a)=respiration

b)-CO2

C)- downward

d)-thoraxic cavity or chest cavity(it is a cavity which is stored in ribcage and in this cavity lungs is present.