Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: Collision theory states that chemical reactions occur when atoms, ions, or molecules collide.

Answer: What states that chemical reactions occur when atoms, ions, or molecules collide?


Question: The bird ancestor that lived in trees developed wings, which is commonly associated with birds.

Answer: The bird ancestor that lived in trees developed what feature commonly associated with birds?


Question: Fish category of animals in the vertebrate group has a relatively small brain but highly developed sense organs.

Answer:
What category of animals in the vertebrate group has a relatively small brain but highly developed sense organs?