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

Q: 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.

A: Which statement best explains why the Sun and the Moon appear to be about the same size in the sky?
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Q: Most ferns produce the same type of spores and are therefore called homosporous.

A: Most ferns produce the same type of spores and are therefore called what?
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Q: Mutualistic relationships are a kind of beneficial relationships with other organisms that are common in the plant kingdom.

A:
What kind of beneficial relationships with other organisms are common in the plant kingdom?
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