19. Which of the following statements about HIV is true? A. It attacks the body's immune system so that it cannot effectively fight off infections.

B. It does not affect the person until it turns into AIDS.

C. It causes cancer.

D. None of these choices are correct.

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.

Which do you focus on to lower your set point

Why mature red blood cells has no nucleus