Why can sickle cell disease cause death? a. the malformed red blood cells cannot transport oxygen. b. the malformed red blood cells cannot enter capillaries and, in fact, block them. c. the malformed blood cells assume a sickle-shape. d. the patient has two copies of the mutant gene. e. more cells assume the sickle shape as oxygen concentration in the tissues falls.

for question 8

1: it gets the blood pumping more

2: endorphins and other neurotransmitters

out of the choices i'd say d the ability to set goals, mainly because to desire to continue you need motivation but it isn't motivation in that part, but setting goals means you have an endgame and you want to reach it which sums up motivation.

when in a crucial situation, after calling 911, the correct posture for delivering effective compression is the proper hand placement.

first, place two fingers at the sternum, then put the heel of your other hand next to the fingers and place hand on top of the other. lock your elbows by using your body’s weight and compress the victim’s chest with a depth of 2 inches.

moreover, do 15 compression and 2 breaths, this process must be done four times until there is a pulse or a arrive.