An example of a grad-school level question?
Gregor Mendel was the first to show that organisms had traits that are passed on from parents to the next generation. In order for the scientific community to accept Mendel's discovery, others had to

I just took a test in school today. What question was I asked?

Question I was asked: Which of these characteristics best helps scientists classify organisms?

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Which of the following is a crucial piece of evidence supporting scientists' theory of how the continents and the ocean basins formed?

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Question generated: What will most likely result when the jet stream moves south of North Carolina?

Problem: Write a question you would see in a school textbook.

Answer: Which environmental problem was directly caused by the invention of the automobile?

Problem: Write a question you would see in a school textbook.

Answer:
A recent study concluded that about 90% of all large predatory fish such as tuna have disappeared from the world's oceans in the past 50 years. Which of these is most likely the direct cause of this loss?