What is water’s role in the light reaction of photosynthesis?

Which of the following is not a product of the second stage of glycosis

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity