Question

what will happen not have diaphragm

Answer 1

if the diaphragm is not present,then there will be no high pressure or low pressure created in the lung or outside the lungs,and the lungs will work inappropriately,and  the air wont rush in or out leading to the stop of respiration and breathing and if these two processes stop then a person will no longer be able to survive

Answer 2

Explanation:

Diaphragm, dome-shaped, muscular and membranous structure that separates the thoracic and abdominal cavities in mammals.