Given a statement, generate a question such that the answer is contained in that statement.
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Question: respiration requires a certain amount of carbon dioxide

Answer: What does respiration require?


Question: Pedigrees are useful tools for studying genetic IQ patterns

Answer: What are useful tools for studying genetic IQ patterns?


Question: the Earth being buried in snow and ice for millions of years at a time is relatively rare

Answer:
What kind of ice is the Earth buried in?