Answers

2015-03-18T15:45:17+08:00

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
The oxygenated blood will supply the lung. when blood reaches the heart, the heart will separate the blood and the waste material "carbon dioxide" so the carbon dioxide will goes through the lung and it process to bring out the carbon dioxide  in order to exhale.
0