Given a scientific passage and an answer, generate a question for the given answer.

Q: Passage: Images in a plane mirror are reversed left and right but not reversed top and bottom. Answer: plane mirror

A: Images in what type of mirror are reversed left and right but not reversed top and bottom?
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Q: Passage: and procaine. Not only do catalysts greatly increase the rates of reactions, but in some cases such as in petroleum refining, they also control which products are formed. The acceleration of a reaction by a catalyst is called catalysis. Answer: reactions

A: Catalysts can greatly increase the rates of chemical what?
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Q: Passage: Human beings and other primates also have the ability to see in color. We have special cells inside our eyes that can distinguish different wavelengths of visible light. Visible light is light in the range of wavelengths that the human eye can sense. The exact wavelength of visible light determines its color. Answer: exact wavelength

A:
What determines the color of visible light?
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