According to the statistics cited in your textbook, in 2010, what average percentage of u. s. high school students reported having used marijuana in the past 30 days

According to subpart d, research with children may be eligible for exemption when: the children will be asked to complete a surveythe research involves the use of educational teststhe children will be interviewed by the researcher.the research with children will involve participant observation with researcher interaction.

Which was an important long-term result of the civil war? a a feeling of american nationalism developed. b. industrialism increased in the south. c. differences between social classes declined.

Did separate black churches make african americans in the north more free or less free?