The respiratory system
The respiratory system brings oxygen into the body when you breathe in and removes carbon dioxide, a waste product, when you breathe out, but it can't get that oxygen to the rest of the body on its own, it hands it off to the circulatory system to deliver.
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Midterm
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This final covers a lot of topics, so it's split into 2 parts. Each part includes a question from every one of its topics.
Final, Part 1 of 2
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Final, Part 2 of 2
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