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What system uses oxygen to produce energy?

User TwinPrimesAreEz
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The aerobic system can use carbohydrates, fats, or proteins to produce energy.
User Djuna
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Answer:

The aerobic systemThe aerobic system can use carbohydrates, fats, or proteins to produce energy. Energy production is slower, but more efficient than the other two systems. As you can tell by the name, the aerobic system requires that there be adequate oxygen available to the working muscles.

Step-by-step explanation:

User Mhvelplund
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