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.

Question: How many protons and electrons each do carbon atoms have? Answer: six
Carbon atoms have six protons and electrons each.

Question: Which of these can be mined from Earth and used as an energy source? Answer: Coal
Coal can be mined from earth and used as an energy source.

Question: Strength, the ability of a muscle to use force during a contraction, differs from what term meaning the ability of a muscle to continue to contract over time without getting tired? Answer: endurance

Strength, the ability of a muscle to use force during a contraction, differs from endurance, meaning the ability of a muscle to continue to contract over time without getting tired.