The structure that serves as a biological clock and controls human circadian rhythms is the:

According to the text, the best way to think about the relationship between most adolescents and their parents is to emphasize the term:

a. "all-out war" b. negotiation c. collaboration d. two-way resentment

According to Chinese and East Indian cultures, garlic, onions, most grains, alcohol, and oils are all:

a. cold foods c. energy foods b. hot foods d. Qi foods