There are many criteria that are used to define living things. living things reproduce, grow, and develop. they respond to stimuli, use materials andenergy, and evolve and adapt over time to their environment. another criteria is all living things are made of cells.
"The Calvin cycle, Calvin–Benson–Bassham (CBB) cycle, reductive pentose phosphate cycle or C3 cycle is a series of biochemical redox reactions that take place in the stroma of chloroplast in photosynthetic organisms. ... This set of reactions is also called carbon fixation. The key enzyme of the cycle is called RuBisCO."
