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? chronic bronchitis emphysema lung cancer oral cancer

When deciding to become a parent: a. the only thing that matters is the desire to have a child. b. the most important thing is whether or not you are financially ready. c. you should be ready to support and nurture a child. d. you have no choice; "nature" decides if and when you will have a child.

Health terminologyan incision of the thyroid gland is called:

Which of the following is a nonspecific defense against pathogens? - b cells - antibodies - t-cells - inflammation