What did the study in a Pennsylvania forest reveal about the environmental effects of using DDT? DDT killed ladybugs, which caused the aphid population to rise. DDT killed aphids that ate forest leaves. DDT caused the birds in the forest to disappear. DDT killed aphids, which caused the ladybug population to rise.

Aresearcher conducting behavioral research collects individually identifiable sensitive information about illicit drug use and other illegal behaviors by surveying college students. the data are stored on a laptop computer without encryption, and the laptop computer is stolen from the researcher’s car on the way home from work. this is an unanticipated problem that must be reported because the incident was (a) unexpected (i.e., the researchers did not anticipate the theft); (b) related to participation in the research; and (c) placed the subjects at a greater risk of psychological and social harm from the breach in confidentiality of the study data than was previously known or recognized. according to ohrp, this unanticipated problem must be reported to the irb in which timeframe? promptlywithin 48 hourswithin 24 hourswithin two weeks

Read the quote by jane addams. "the settlement then, is an experimental effort to aid in the solution of the social and industrial problems in a great city." which of the following best describes what addams meant by the settlement"? chicago immigration hull house the social gospel

Why was washington a logical choice to be commander in chief of the continental army?