Evolution of photosynthesis C photosynthesis is the oldest and most common form. C3 is a plant that uses the calvin cycle for the initial steps that incorporate CO2 into organic material. C4 is a plant that prefaces the calvin cycle with reactions that incorporate CO2 into four-carbon compounds. CAM is a plant that uses crassulacean acid metabolism, an adaptation for photosynthesis in arid conditions. C4 and CAM Plants have special adaptations that save water. The biochemical capacity to use water as the source for electrons in photosynthesis evolved in a common ancestor of extant cyanobacteria. The geological record indicates that this transforming event
What I Can Do for You 1996 mini-calendar. In the UK charts, it reached number 84 in its first release on February 19, 1994 and then number 43 on November 11, 1995. The song deals with sexual harassment with which Sheryl says she experienced her share of during her road to fame. What I Can Do for You "What I Can Do for You" is a single by Sheryl Crow from the album "Tuesday Night Music Club" released on A&M Records. It was originally released in 1993 and the single includes a rare speedier version of LP track "The Na-Na Song" (i.e. "Volvo Cowgirl 99"). "What