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

Q: Respiratory acidosis is considered to be problematic because excess co2 in blood.

A: Why is respiratory acidosis considered to be problematic?
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Q: Present-day plants that have a complex vascular tissue system are called vasuluar plants.

A: Present-day plants that have a complex vascular tissue system are called what kind of plants?
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Q: Based on the passage, they may represent individual people is one conclusion archaeologists have reached about the statues.

A:
Based on the passage, what is one conclusion archaeologists have reached about the statues?
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