Circadian rhythms are controlled by a biological clock, located in a cluster of cells in the _______________

Which of the following is true about hormone therapy?

A. Decreases heart attacks. B. Increases hot flashes. C. Decreases strokes. D. Increases breast cancer.

What percentage of Japanese parents and preschool teachers indicated that the primary purpose of preschool education was "to give children a good start academically"?

a. 2% b. 22% c. 62% d. 92%