<em>Chlorella vulgaris</em> (IMAGE) University of Exeter Caption Phytoplankton absorb as much carbon dioxide as tropical rainforests and so understanding the way they respond to a warming climate is crucial. Credit Gabriel Yvon-Durocher Usage Restrictions Use with accreditation. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.