The mayan civilization had begun to collapse by due to frequent warfare, overpopulation, over farming and exhausted soil, and peasant revolts because of harsh taxation.
a.) 100 ad
b.) 300 ad
c.) 500 ad
d.) 1500 ad

If the president needed to send two members of the cabinet to italy to negotiate a military treaty, the secretary of defense and the secretary of would most likely be sent.

Aresearcher conducts a focus group to learn about attitudes towards hygiene and disease prevention. two weeks after the focus group, the researcher learns one of the subjects had a heart attack at home and was hospitalized, but made a full recovery. based on dhs regulations, the researcher report this event to the irb? no, this does not need to be reported since the subject had the heart attack when they were home, not at the focus group. no, this does not need to be reported since it is unrelated to participation in the study. no, this does not need to be reported because two weeks have passed. no, this does not need to be reported since the subject recovered.

Which choice best describes how your answer compares to the sample