Jane is sedentary and obese. what effect, in any, do these factors have on her health

This refers to weather and atmospheric conditions measured over a long period of time.

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 of these persons was a co-founder of twitter? eric schmidt jack dorsey tim cook paul alle