High Efficiency (IMAGE) Columbia Climate School Caption Part of a mummified leaf, highly magnified. One can make out individual epidermal cells, and mouth-shaped stomata, openings through which the leaf took in carbon dioxide and released water. Credit Tammo Reichgelt Usage Restrictions Credit must be given. 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.