An example of a grad-school level question?
Which tools are best used to determine the speed of a turtle as it walks along a path?

An example of a grad-school level question?
A student adds sugar, spices, and salt to a bowl of peanuts and stirs them together. What has the student made?

An example of a grad-school level question?
Improvements in farming technology would most likely

An example of a grad-school level question?
In May 2007, wildfires burned more than 350 square miles of habitat in Florida and Georgia. Intense fires like this one can temporarily remove nitrogen, phosphorus, and potassium in area soil. What most likely happens in the burned areas until organic decay replenishes the lost nutrients?