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: Enzymes speed up the rate of a specific chemical reaction and is therefore known as what? Answer: biochemical catalysts

A: Enzymes speed up the rate of a specific chemical reaction and are therefore known as biochemical catalysts.
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Q: Question: The outer surface of the heart changes from positive to negative during what? Answer: depolarization

A: The outer surface of the heart changes from positive to negative during depolarization.
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Q: Question: What allowed life to expand and diversify during the early cambrian period? Answer: warm, humid climate

A:
Warm, humid climate allowed life to expand and diversify during the early cambrian period.
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