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

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?

A skeleton that consists of hard, mineralized structures located within the soft tissue of organisms is called endoskeleton.
A skeleton that consists of hard, mineralized structures located within the soft tissue of organisms is called what?

Young roots and leaves are the major sites of gibberellin production.

What are the major sites of gibberellin production?