Acts as a barrier, blocking many pathogens from entering the body.
a.
skin
b.
platelets
c.
white blood cells

How is health different for most people in this country today from what it was for people born in 1900? a. people have a shorter life span. b. people today work harder to survive. c. people today live in poorer sanitary conditions. d. people today can focus less on day-to-day survival and more quality of life.

Explain why clients become self -sufficient is important.

Which of these is a fact about performance enhancing drugs? a. steroids lack addictive properties. b. steroids use can cause dangerous side effects. c. it is safe to use steroids when working out. d. a person can get in legal trouble for using steroids.