What are 3 types of permanent methods of birth control?

Why is important to cover your hands and feet in cold weather? a. they are furthest from your heart. b. they are often last to receive blood flow. c. they can suffer from tissue damage in cold weather. d. all of the above

For yokos physical fitness class she is supposed to do a certain amount of aerobic exercise what is best for her

Why do you need two different circuits of blood vessels in your body?