In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Q: Question: Gene expression and what else are usually considered the same molecular process? Answer: protein synthesis

A: Gene expression and protein synthesis are usually considered the same molecular process.
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Q: Question: What occurs if oxygen cannot be obtained at a sufficient rate? Answer: anaerobic respiration

A: Anaerobic respiration occurs if oxygen cannot be obtained at a sufficient rate.
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Q: Question: Why do birds build nests? Answer: safe place

A:
Birds build nests to safe place.
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