Given a statement, generate a question such that the answer is contained in that statement.
--------
Question: When the planet was buried in snow and ice it was known as the glacial eras

Answer: What era was the planet known as when it was buried in snow and ice?


Question: Closely observing other planets requires a telescope

Answer: What type of telescope is required for close observation of other planets?


Question: eagles flap their wings more quickly to fly faster

Answer:
What do eagles flap more quickly to fly faster?