Category:Respiratory system
From Wikipedia, the free encyclopedia
The respiratory system is the biological system of any organism that engages in gas exchange. Even trees have respiratory systems, taking in carbon dioxide and emitting oxygen.
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The main article for this category is Respiratory system.
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Subcategories
This category has the following 2 subcategories, out of 2 total.
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Pages in category "Respiratory system"
The following 70 pages are in this category, out of 70 total. Updates to this list can occasionally be delayed for a few days.
