Richard is surprised during puberty that his breasts are enlarging. This temporary physical phenomenon is termed:

Which factor did not contribute in a significant way to the development of the Scientific Revolution?

a) Scholasticism b) the printing press c) discovery of Aristotle's writings d) rise of Protestantism e) all of the above were important

By what means does the brain find out about the nutrient content of food in the stomach?

a. hormones b. activity of the vagus nerve c. activity of the splanchnic nerves d. the duodenum