Which of the following is an example of positive feedback in the lumen of the stomach?
- chief cells secrete pepsinogen, which is a precursor to pepsin.
- pepsin digests molecules of pepsinogen, producing more pepsin.
- pepsin works best in the acidic environment produced by hydrochloric acid.
- hydrochloric acid converts pepsinogen to pepsin.

How can a general chart for physical activity recommendations patients improve their overall health?

Tessa’s friend milo offers her a ride home. tessa does not like riding with milo. he insists that everyone wear a seat belt, and he listens to classical music. he drives a small car, and usually texts while driving. why should tessa refuse milo’s offer? milo texts while driving. milo listens to classical music. milo drives a small car. milo insists that everyone wear a seat belt.

Which of these is the best example of sexual objectification? a) a female initiates a conversation with another female. b) a male proposes marriage to a female. c) a female makes repated coments to a male about his appearence. d) a female proposes marriage to a male.