Stars, other than the sun, are too far away from earth to be studied by space probes. how are scientists able to study the composition of a star that is located outside of the solar system?
a.
by evaluating the air pressure in the atmosphere of the star
b.
by evaluating the kinds of sounds given off by the star
c.
by evaluating the different colors of light radiated by the star
d.
by evaluating the mass, density, and volume of the star

Read the quotation to the left. which of these adjectives best describes jurgis's attitude? check all of the boxes that apply.

U.s. foreign aid incudes all the following programs excepta. humanitarian aidb. military assistancec. cycle of dependency grantsd. development aid

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