How much do nonsmokers increase their risk of developing heart disease by exposing themselves to secondhand smoke at home or work?
a.) 15 to 20 percent
b.) 20 to 25 percent
c.) 25 to 30 percent
d.) 30 to 35 percent

Occurs when the immune system attacks the body. lupus cancer sickle cell disease huntingtons disease

Which of the following describes the rooting reflex? a. a newborn turns the face toward a touch on the cheek in search of food. b. a newborn will automatically suck on objects placed in the mouth like a bottle. c. newborn immersed in water will display something like movement. d. newborn curls a hand around an object that touches the palm

True or false a fertilized cell divides many times to form an embryo