About this document
Understanding Respiratory and Circulatory Systems by api-125422431 is a document available to read on EtoBox.
Lungs give the air to the heart in the blood system and they get CO2 in return they breathe the CO2 back out into the land. This is the eternal way of the ever-breathing lungs they get rid of that carbon dioxide and other potentially harmful things in the air.
- Author
- api-125422431
- Language
- EN