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

[EX Q]: A diet rich in calcium and vitamin d may reduce the risk of osteoporosis and related bone fractures.
[EX A]: A diet rich in calcium and what vitamin may reduce the risk of osteoporosis and related bone fractures?

[EX Q]: Thermoregulation is the process when animals maintain an internal temperature.
[EX A]: What is the process when animals maintain an internal temperature?

[EX Q]: Bees are naturalized on every continent except antarctica.
[EX A]:
Bees are naturalized on every continent except which?