Litter of puppies has two puppies that are like. that’s because dogs reproduce

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

These facilities were organized and sponsored by churches or charities during the great depression in an effort to feed the homeless and needy.

What best describes how producers benefit from specialization