What is the usual result when the government sets a price ceiling on rents?

Which of the following is characteristic of people from cultures with low humane orientation? a. they express greetings, welcome, concern and appreciation in most interactions. b. they are sensitive to all forms of unfairness c. they smile and display other nonverbal signs of welcome. d. they prioritize pleasure and self enjoyment over kindness and generosity.

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.

What greek scientist created a screw to move water for irrigation?