Scientists don't have a clear-cut definition of life.
a. true
b. false user: only a living organism exhibits all of the characteristics of life.
a. true
b. false

American s often refer to a country that is not the u.s as a a( domestic), or b(foreign)

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

What caused the settlement of more african americans in the mississippi alluvial plain region than in the ozark mountains point)