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: The human eye detect can detect three colors of light.

Answer: How many colors of light can the human eye detect?

Question: Present-day plants that have a complex vascular tissue system are called vasuluar plants.

Answer: Present-day plants that have a complex vascular tissue system are called what kind of plants?

Question: External pressure affects the boiling point of water.

Answer:
What affects the boiling point of water?