Given a statement, generate a question such that the answer is contained in that statement.
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Question: ice ages buried Earth in permafrost for millions of years at a time

Answer: How many years have ice ages buried Earth in permafrost?


Question: plants are able to reduce moisture loss

Answer: What are plants able to do?


Question: acetate changes the color of litmus paper from blue to red

Answer:
What color does acetate change the color of litmus paper from?