sentences: maintaining homeostasis requires respiration & the respiratory system performs respiration -> matter performed by the respiratory systems is required for maintaining conducts respiration performed by the respiratory system is required for maintaining homeostasis  the lungs are a part of the respiratory system & the lungs are a part of the body of an animal used for breathing air -> the respiratory million is used for smother land the respiratory system is used for breathing air  respiration performed by the respiratory system is required for maintaining homeostasis & the respiratory million is used for smother land -> breathing air performed by the respiratory system is required for maintaining homeostasis breathing air performed by the respiratory system is required for maintaining homeostasis  breathing out is when animals exhale carbon dioxide from their lungs into the air & tightening muscles in the chest can be used to exhale -> loosening of the city of the chance is used for exhaling oxygen oxygen out of the current when smother tightening of the muscles of the chest is used for exhaling carbon dioxide out of the lungs when breathing  tightening of the muscles of the chest is used for exhaling carbon dioxide out of the lungs when breathing & the muscular system contains muscles -> loosening of the rusting of the chance performed by the muscular lay is used for exhaling oxygen oxygen out of the limit when smother tightening of the muscles of the chest performed by the muscular system is used for exhaling carbon dioxide out of the lungs when breathing  smother land performed by the respiratory solution is required for maintaining eating & tightening of the muscles of the chest performed by the muscular system is used for exhaling carbon dioxide out of the lungs when breathing -> the muscular system tightens the muscles of the chest to help the respiratory system exhale carbon dioxide out of the lungs when breathing in order to maintain homeostasis