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During the day, this compound internally releases carbon dioxide, which is then refixed using rubisco.
CDDs are calculated by subtracting a threshold value (24C, for example) from the mean daily air temperature.
Less than 1% of earth's plant species can be characterized as C plants.
Calcification The process by which the calcium carbonate skeletons of corals are created.
Catalyst A substance that either speeds up or slows down a chemical reaction but which does not experience a permanent chemical change in the process.
Cell cycle The time that it takes a newly formed cell to grow and divide, producing thereby a second cell.
It is based on the observation that the ratio of C in the air at the time that the carbon was photosynthetically "fixed" by the plant that assimilated it out of the air.