Which is a measurement of the temperature left over from the big bang?
a.
doppler shift of galaxies
b.
doppler shift of stars
c.
frequencies of radio galaxies
d.
cosmic background radiation

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a.static group comparisonb. pretest-posttest control group designc.control-group-time-series designd. nonrandomized control-group pretest-posttest design

Which factors are examples of how technology may have affected the great migration apex