During what stage of photosynthesis are atp and nadph converted to adp + pi and nadp+?
a) the light-dependent reactions
b) the light-independent reactions
c) both of the above
d) none of the above

Why does competiton happen? a: different organisms have different needsb: there are limited resources in an ecosystemc: there are no predators in an ecosystemd: organisms do not need the same resources (i think it's b but i'm not sure)