Six-year-old Blair liked the first grade right up until her teacher, Ms. Havemayer, took maternity leave. The substitute teacher, old Ms. Snarly, was strict and scolded Blair on several occasions, making her cry. On one Saturday morning as Blair was helping her father with grocery shopping, she suddenly came face to face with old Ms. Snarly. Blair instantly burst into tears. For Blair, Ms. Snarly in the grocery store is an example of a(n):

Troy is the ceo of a manufacturing company, and he is planning to open a new factory in his community.because the new factory will require heavier traffic from delivery trucks and employees' cars, troy is partnering with the city to expand and rebuild roadways in the neighborhood.as part of opening the factory, he also plans to create a new hiring program. because he wants his workers to gain skills, he will also offer them the opportunity to attend college courses to receive business training. which of these outcomes are possible negative externalities? check all that apply. increased traffic in the neighborhood surrounding the factory better roads for drivers in the area more educated workers in the community pollution from trucks making deliveries to the factory new job opportunities in the city

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.

Popular culture mainly encompasses the realm of