The first line of defense for keeping pathogens out of the body is the
a. skin
b. antibodies
c. immune system
d. white blood cells

Protein provides 4 calories per gram. mary is on a diet that requires her to eat atleast 40 grams of protein each day. shes eaten 152 calories of protein today. how much more protein does mary need to eat to meet her goal?

The real advantage to hydrostatic weighing is that it a. can be done anywhere with no equipment b. gives one of the most accurate measurements of body fat c. uses calipers to measure body fat select the best answer from the choices provided.

Signs of a sprain might include: a deformed appearance immobility a grinding sensation swelling