Mammals breathe with the help of a diaphragm.
When a person stops breathing, they die.
Mammals prevent death with the help of a diaphragm.
What do mammals use a diaphragm for?

(1) movement
(2) Movement of an air mass
(3) Pumping water
(4) survival
(5) Preventing death
(6) To keep their body heat.
(7) Shaving cats
(8) Making friends