During the early history of the persian empire, cyrus the great conquered the area known as mesopotamia. this region made up the very heart of the persian empire. what modern-day country is located in this region?

Atreatment for stuttering in which the person is asked to speak in a singsong fashion, usually with the aid of a metronome is

Stories that are passed down through generations by word of mouth are called

Donald is studying the eating habits of all students attending his school. he samples the population by dividing the students into groups by grade level and randomly selecting a proportionate number of students from each group. he then collects data from the sample. which type of sampling is used? select the correct answer below: systematic sampling convenience sampling stratified sampling cluster sampling