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Potentially, a large spill can be: a) an environmental threat, if it gets into drains b) a dangerous fire hazard c) harmful to individuals d) all of the above

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 of the following variables has the strongest influence on the variations found in american family life? a. race and ethnicity b. religious affiliation c. social class and culture d. education and occupation