Category:Respiratory system
From Free net 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.
- The main article for this category is [[{{{1|Respiratory system}}}]].cs:Kategorie:Dýchací soustava
de:Kategorie:Atmungsapparat es:Categoría:Aparato respiratorio fr:Catégorie:Système respiratoire io:Category:Respirala sistemo pt:Categoria:Sistema respiratório vi:Thể loại:Hệ hô hấp