Aschool nurse prepares a lecture on puberty for 5th and 6th grade girls. the nurse asks the group, "what is the first sign of puberty? " a student correctly replies:

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

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.

Which of the following identifies a main culprit for america’s increasing weight gain