Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
--------
Question: Natural resource type of resource is limited in supply and cannot be replaced except over millions of years.

Answer: What type of resource is limited in supply and cannot be replaced except over millions of years?


Question: Seismic waves prove the inner core it is solid.

Answer: What do seismic waves prove about the inner core?


Question: Starches are complex carbohydrates that are the polymers of glucose.

Answer:
What complex carbohydrates are the polymers of glucose?