The primary victims of the influenza pandemic of 1918-1919 were
A) members of the military.
B) infants and the elderly.
C) residents of Spain; therefore, it was known as the "Spanish Flu."
D) young adults.
E) residents of the U.S.
D
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Coral reefs, atolls, and islands are the result of the buildup of coral
(a) polyps. (b) medusae. (c) exoskeletons. (d) wastes.
Animal viruses have the ability to attach to and enter almost any animal host cell.
Answer the following statement true (T) or false (F)
Angiosperms have two separate gametophytes because
A. this is normal for alternation of generations. B. one can survive and fertilize without the need for external water. C. this is normal for all sexually reproducing plants, where sperm are produced by microgametophytes and eggs by megagametophytes. D. these two structures allow fertilization without the need for external water. E. the microgametophyte is haploid and the megagametophyte is diploid.
If an Rh-positive woman marries an Rh-negative man, their children are at risk for hemolytic disease of the newborn.
Answer the following statement true (T) or false (F)