The day marcus delivered his speech about the dangers of paparazzi stalking celebrities was also the anniversary of the death of princess diana. marcus decided to mention this in his speech introduction. what introductory device was marcus using?

What was different about warfare in the early 1800s and early 1900s?

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

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