Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Cancer occurs most often in adults over fifty age.
Cancer occurs most often in adults over what age?

The sun and the moon appear to be about the same size in the sky because the moon is smaller in diameter and is closer to earth than the sun.
Which statement best explains why the Sun and the Moon appear to be about the same size in the sky?

The term macroevolution refers to larger evolutionary changes that result in new species.

What term refers to larger evolutionary changes that result in new species?