An example of a grad-school level question?
What advantage do sea stars gain from having radial symmetry?

An example of a grad-school level question?
A light-year is a measure of

An example of a grad-school level question?
Scientists recorded the hourly temperature at a weather station for the month of July and want to quickly measure a trend over time in temperature changes. Which of these formats would be the most appropriate representation of the temperature data to quickly measure any trend?

An example of a grad-school level question?
Which of the following identifies the primary function of a radio station tower in a communication system?