Which crop did all of the ancient civilizations in the Americas grow?

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a study of twenty 4th grade classrooms in which researchers ask the schools to systematically vary the time of day reading is taught, and collect weekly assessments of reading comprehension for each child over a three-month period.the collection of data, by a playground designer hired by the superintendent of schools, about the physical dimensions of school playgrounds, presence of fencing, and the kinds of equipment currently provided.a feasibility study for implementing a year-round school program, focusing on economic issues such a facilities utilization and transportation costs.an analysis of aggregate data comparing statewide high school graduation rates provided by the state department of public instruction, using county tax information.

Which of the following is true of cultural syndromes of distress? a. it refers to attributing pathological symptoms to normative cultural differences. b. refers to misinterpreting culturally sanctioned behavior as expressions of pathological symptoms. c. it refers to the ways that communities and cultural groups communicate and express their distressing thoughts, behaviors, and emotions. d. it refers to patterns of symptoms that tend to cluster together for individuals in specific cultural groups, communities, or contexts.

Why did the united states want to remain neutral and how did it become involved in world war ii?