What is cardiac arrest? a. a sudden rush of blood from the heart over-exerting itself.
b. a sudden loss of blood flow resulting from the failure of the heart to effectively pump.
c. the sudden draining of the blood from the heart.
d. a sudden loss of air flow resulting from the lungs effectively pumping oxygen.

What is difference between an epidemic and a pandemic? a) an epidemic is a disease; a pandemic is a treatment.b) an epidemic is restricted to a local region; a pandemic is global.c) an epidemic has low mortality; a pandemic has higher mortality.d) an epidemic is caused by a bacterial infection; a pandemic is caused by a viral infection.

Is tea good for you? if so what type of tea is good for you? and how much should i drink before it is a threat to my health?

Which one of the doll choices is a bio marker of biological again that can you determine whether or not you’re doing or worse than your chronological age