In normal breathing, which is the active process inspiration or expiration?Explain.

2

(a)

What is Adam's apple? Is it more prominent in males or females?

2

(a)

What makes carbon monoxide more harmful to animals than carbon dioxide?

2

(a)

How marine mammals are able to make long underwater dives?Explain

2

(a)

What happens to the respiratory process in a man going up a hill?

2

(a)