Gwhen the number of calories a person consumes is equal to the number of calories he or she burns in a day, that person's body is in

American college students invented football by combining what two sports?

When a researcher debriefs her participants, she: provides a detailed explanation of the study. removes their undergarments. tells them they can stop taking part at any time. provides an detailed explanation of the study, and tells them they can stop taking part at any time.

Summarize four pregnancy-prevention methods. discuss the benefits effectiveness and risks of each