Describe how the population shifts after the Crusades.​

Which best describes why it is necessary to evaluate a solution?

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

Jimmy carter served in the georgia senate from 1963-1967. which issue would he have been most likely to have delt with as a georgia senator