https://padlet.com/maknickmeyer/7e5gh1j1kv5z en-us 2018-02-27 02:47:14 UTC 2018-03-05 19:47:36 UTC hello@padlet.com https://padletuploads.blob.core.windows.net/prod/80264060/cdf38ae2d21ee13c036196e76c1eb262/Backback.png maknickmeyer https://padlet.com/maknickmeyer/7e5gh1j1kv5z/wish/235712010 2018-02-27 02:50:50 UTC https://padlet.com/maknickmeyer/7e5gh1j1kv5z/wish/235712010 kanemecheck https://padlet.com/maknickmeyer/7e5gh1j1kv5z/wish/238318325 A simple example is the connection between the circulatory and respiratory systems. As blood circulates through your body, it eventually needs fresh oxygen (O₂) from the air. When the blood reaches the lungs, part of the respiratory system, the blood is re-oxygenated.]]> 2018-03-05 19:44:33 UTC https://padlet.com/maknickmeyer/7e5gh1j1kv5z/wish/238318325