Which reactant in the photosynthesis equation is the source of hydrogen for sugar molecules?

Which substance contains thylakoids? a) nadph b)atp c)stroma d)chloroplast

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.

2points what do bacteria have in common with the cells of other living organisms?