<span>Evidence that human activities influence the global climate system continues to accumulate. Data indicate that Earth's surface temperature is rising. This increase can be attributed, in part, to human-caused increases in greenhouse gases such as carbon dioxide. It is becoming apparent that these climatic changes are negatively affecting physical and biological systems worldwide.</span>
Explanation:
Pulmonary Arteries where the blood is re-oxygenated.
It is the Digestive system :)
