What is the correct definition of arteriosclerosis? —
A. a condition that occurs when the blood supply to the heart slows or stops, causing damage to the heart muscle

B. a group of disorders that cause a thickening and hardening of arteries

C. a condition that occurs when fatty substances build up on the inner lining of arteries

D. a surgical procedure in which an instrument with a tiny balloon attached is inserted into an artery to clear a blockage

Acne is caused by a. a strict diet b. eating at night c. hormones d. dry skin select the best answer from the choices provided. a b c d

Wanting to know the rules and the right person to ask for are characteristics of the safety reassurances required by preschoolers. infants. school-age children. toddlers.

Which of the following best reflects what we know about how the flu virus moves between species? a) the flu virus in a pig is mutated and replicated in alternate arrangements so that humans who eat the pig products can be infected. b) a flu virus from a human epidemic or pandemic infects birds; the birds replicate the virus differently and then pass it back to humans. c) an influenza virus gains new sequences of dna from another virus, such as a herpesvirus; this enables it to be transmitted to a human host. d) an animal such as a pig is infected with more than one virus, genetic recombination occurs, the new virus mutates, the virus is passed to a new species such as a bird, and the virus mutates again and can now be transmitted to humans.