This is a reading comprehension about the Respiratory System and the Circulatory System and how they work together to achieve homeostasis within the body. It is aligned to 7th-grade essential standards - body systems unit. The article is written in friendly and engaging language. It is about a page and a half and includes a page and a half of standards-aligned comprehension and analyses questions. The article can be used for literacy groups, individual DEAR or homework reinforcement. I use the article for EoG review.