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.
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Question: Question: The outer surface of the heart changes from positive to negative during what? Answer: depolarization

Answer: The outer surface of the heart changes from positive to negative during depolarization.


Question: Question: In science, what is supported by much evidence, widely accepted by credible scientists, and unlikely to be disproved? Answer: theory

Answer: In science, theory is supported by much evidence, widely accepted by credible scientists, and unlikely to be disproved.


Question: Question: Which of the following statements best describes a complex machine? Answer: It is made of more than one simple machine.

Answer:
A complex machine is described by: it is made of more than one simple machine.