Prolonged and constant use of tobacco can weaken the user's immune system and increase the risk of many diseases. which disease makes the air sacs in the lungs less elastic, reducing their ability to absorb oxygen?

Which of the following will abstinence most likely to improve? a. creativity b. physical strength c. flexibility d. emotional health

Can someone give me one specific health problem, and explain it. !

Which action occurs in the third stage of cell division? a. the nuclear material of cell is copied exactly. b. the nuclear membrane disappears. c. the cell forms two nuclei d. the nuclear material separates, with half moving to either side of the cell.