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Topic
Level
7th - High School
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Free
None
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Common Core
Yes
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As humans, we really like breathing oxygen. That’s because the cells in our body will die if they don’t get the oxygen they need to function. This tutorial describes how gases are exchanged between blood and the atmosphere in our lungs, and how oxygen is then pumped through the body by way of blood and the circulatory system.
Posted
Mar 2023
This resource has religious influence.
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