Pavlov's research demonstrated that involuntary reaction (salivation) could occur in response to an unrelated stimulus (sound of a bell) an unrelated stimulus (salivation) could occur in response to an involuntary reaction (sound of a bell) involuntary reaction (sound of a bell) could occur in response to an unrelated stimulus (food) an unrelated stimulus (food)

20 points the two basic principles of economics are (choose two) question 2 options: a. the wants of society and individuals are limited. b. the wants of society and individuals are unlimited. c. the resources of society are limited. d. the resources of society are unlimited.

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.

How is the uk’s government is solving the air pollution problem?