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 Do I Do with Me What Do I Do with Me What Do I Do with Me is a 1991 album by American country music singer Tanya Tucker. It was her highest-placing on the Billboard charts reaching #6 in the Country albums and #48 on the Pop albums categories. The album produced four Top Ten hits on the Hot Country Songs charts: "(Without You) What Do I Do with Me" and "Down to My Last Teardrop" both at number two, "Some Kind of Trouble" at number three, and "If Your Heart Ain't Busy Tonight" at number four. The track "Everything That You Want" was later