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    Human Anatomy
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    Exam 1: Introduction to Human Anatomy and Physiology
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    This Gas Makes Up Approximately 1/5th of Ordinary Air and Is
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This Gas Makes Up Approximately 1/5th of Ordinary Air and Is

Question 46

Question 46

Multiple Choice

This gas makes up approximately 1/5th of ordinary air and is used to release energy from food substances.


A) oxygen
B) carbon dioxide
C) hydrogen
D) nitrogen
E) helium

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