What occurs when excercise begins and the intake of
Oxygen doesn’t immediately meet demands

Do you have multiple choice ?

You should check out the situation and then ask questions like “are you choking”? and if they are able to respond they should nod and if they are not making sound do the heimlich maneuver. i hope this .

Dang it i was gonna answer but yeah its c

Smoking damages the respiratory system by inhalation of a foreign substance, that is absorbed and residue is left behind on our lungs sponge like substance. the gas that is inhaled also increase your blood pressure and dilates your blood vessels. also the process of inhaling and exhaling the smoke it causes irritation to the throat and mouth. smoking can cause lung cancer and other respiratory and circulatory diseases.