The following is not a defense mechanism for infectious disease:

mucous membranes.
red blood cells.
white blood cells.
antibodies.
which one is it?

Pl ! what do u do if you have a friend that is trying gain weight and you tell her to eat and that dont work so you just tell her that she dont have to be like every one else but then she cry

Which of the following best describes sports protective equipment

Explain why many people are concerned about uv rays? explain what causes the skin to burn in the sun? explain why people should avoid the sun if taking a photosensitive medication?