Fractionation of carbon isotopes in oxygenic photosynthesis product 3-phosphoglycerate is depleted in C due to the kinetic isotope effect of the above reaction. The overall C fractionation for C3 photosynthesis ranges between -20 to -37‰. The wide range of variation in delta values expressed in C3 plants is modulated by the stomatal conductance, or the rate of CO entering, or water vapor exiting, the small pores in the epidermis of a leaf. The δC of C3 plants depends on the relationship between stomatal conductance and photosynthetic rate, which is a good proxy of water use efficiency in the leaf. C3 plants with high water-use efficiency tend to
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