The main challenge for the team was the enormous complexity of the lung structure that provides the vital function of oxygen and carbon dioxide exchange with the blood. (sciencedaily.com)
The whole - ecosystem warming was studied, as well as the annual ecosystem carbon dioxide exchange. (earthtimes.org)
Trees — and all vegetation — have been monitored for carbon dioxide exchanges for decades, along with respiration of both CO2 and methane in the soil. (climatenewsnetwork.net)