An example of a grad-school level question?
A windstorm knocks down many trees in a national park. Timber companies want to get rid of the fallen trees. How would this most likely harm the park ecosystem?

An example of a grad-school level question?
Which of these shows the correct order for the central dogma of molecular biology?

An example of a grad-school level question?
Which illness is associated with a weakened immune system in the body?

An example of a grad-school level question?
The body maintains equilibrium through a series of messages called a feedback mechanism. What organ releases hormones that maintain balanced glucose levels?