What delivers oxygen?

Answer 1

The way that your body cells get food and oxygen is throgh the blood, when you breathe in oxygen goes everywhere in your body and when the oxygen intactas with the cells the cls deliover the oxygen everywhere it needs to go.

Answer 2

Hemoglobin found in red blood cells deliver oxygen to all of our cells. The same hemoglobin also brings back carbon dioxide from the cells, which you "blow" off.

Answer 3

Iron

Answer 4

The lungs