Which of the following is not a factor that can elevate heart rate? a. weather b. caffeine c. nervousness d. exercise

Which contraceptive methods will prevent the spread of hiv and other stds? check all that apply. diaphragm male condom female condom pill/minipill spermicides intrauterine device (iud) the “morning after” pill

Ihave a really high metabolism and only weigh 70 pounds (13 almost 14). people always ask me two questions: do you ever eat and how do you eat so much and stay so skinny. i am worried that a high metabolism wont me forever. what are some safe steps i can take to maintain being fit. (also, i already work out i am a dancer so i get cardio a lot)

Which description best defines the nervous system and its two main branches? a: the message center of the body, split into the autonomic nervous system and the somatic nervous system b: the control panel of the body, split into the central nervous system and the exterior nervous system c: the message center of the body, split into the central nervous system and the peripheral nervous system d: the control panel of the body, split into the brain and the spinal cord