Fractionation of carbon isotopes in oxygenic photosynthesis Calvin cycle during the day, when stomata are closed to prevent water loss, and the light reactions can drive the necessary ATP and NADPH production. This pathway differs from C4 photosynthesis because CAM plants separate carbon by storing fixed CO in vesicles at night, then transporting it for use during the day. Thus, CAM plants temporally concentrate CO to improve Rubsico efficiency, whereas C4 plants spatially concentrate CO in bundle sheath cells. The distribution of plants which use CAM photosynthesis includes epiphytes (e.g., orchids, bromeliads) and xerophytes (e.g., succulents, cacti). In Crassulacean acid metabolism, isotopic fractionation combines the effects of
What U Need? Song Festival in Busan, South Korea. "what U need?" was performed together with "Lose Control" at the SMG New Year's Eve Gala 2017 in Baoshan Sports Centre, Shanghai on December 31, 2016. "what U need" stayed at #1 on the Alibaba Real Time Music Chart in China for three consecutive weeks. The single and the music video appeared at the top of music charts in China, Hong Kong, Japan, Malaysia, Thailand, UK, Turkey, Canada and the United States. The song hit the #4 spot on the China V Chart as well as in Billboard's World Digital Songs. Additionally, the song