Relate daily energy requirements to the role of calories

What creates an electric force field that moves electrons through a circuit? a. energy sourceb. loadc. metal wiresd. resistance

What nutrients prevent osteoporosis? a. all vitamins and minerals b. calcium, vitamins c, d, and k, and magnesium c. protein d. carbohydrates

Never seek shelter from a tornado: a. in a mobile home b. in a car or truck c. in a room with windows d. in any of the above