which of the following styles of exercise includes a component specifically designed to increase strength?

True or false mucous membranes destroy pathogens on the outer body surface, at body openings.

True or false. mucous membranes secrete mucus that traps pathogens.

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.