Fractionation of carbon isotopes in oxygenic photosynthesis the C3 pathway in the daytime and the C4 pathway in the nighttime. At night, when temperature and water loss are lower, the CO diffuses through the stomata and produce malate via phosphenolpyruvate carboxylase. During the following day, stomata are closed, malate is decarboxylated, and CO is fixed by RuBisCO. This process alone is similar to that of C4 plants and yields characteristic C4 fractionation values of approximately -11‰. However, in the afternoon, CAM plants may open their stomata and perform C3 photosynthesis. In daytime alone, CAM plants have approximately -28‰ fractionation, characteristic of C3 plants. These combined effects provide
What You Won't Do for Love (song) have a hit". Caldwell returned to the studio and came up with the final product, which included "What You Won't Do for Love". The song's horn arrangement was written and recorded by Miami arranger Mike Lewis. Caldwell wanted the song to be the sixth track on the album since he figured the Album's second track, "My Flame", which featured him playing guitar, would be the hit. However, TK Records felt confident that "What You Won't Do for Love" would be the breakout hit. When it was released to R&B radio, TK Records did its best to hide the fact that