Question

Upwards and downwards movement of diaphragm occurs consecutively

Answer 1

Answer:

when we breath our lungs need more space so the diaphragm moves down and when we have to breath out our lungs need to contract(to ooze the air out) and diaphragm moves up to help in this. breathing(respiration) is a continuous process, therefore, movement of the diaphragm is also continuous

Explanation:

Answer 2

Answer:

Hope It Will Help You