7. Mark did not eat breakfast this morning. He is now rummaging through drawers and cabinets as if he is looking for something. When he does not find anything, he
starts yelling and hitting the wall. What do you think triggered this catastrophic
reaction?
O Hunger
O Pain
Constipation
Lighting

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.