Systems aren't limited to Earth or physical machines. Systems are also important to life!

This model, for example, shows the human respiratory system. This system is responsible for bringing oxygen into the body and removing carbon dioxide from it.

6. Identify some of the parts of this system, as well as the input, process, and output.

Type your answer here.
Human organs being highlighted through the silhouette of a body. Labels are applied to the nose on its face, the lungs in its chest, and the trachea connecting them.'