Using an example, explain what opportunity cost is. (own words)

Which excerpts from queen elizabeth's response to parliament's request that she marry rely on a rhetorical appeal to logos to persuade her audience that even if she produced an heir it would not guarantee england's prosperity or safety? check all that apply.

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.

Germany's black forest is being destroyed as a result of which environmental issue ?