Oxygen that is split form hydrogen in photolysis is...
A. broken down in the light reactions.
B. used up in the calvin cycle
C. pushed down the stem and stored as food
D. released into the atmosphere

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance? 1 in 4 2 in 4 3 in 4 4 in 4

Body temperature is tightly regulated in mammals for example when external temperatures drop too much the body of a mammal response by in order to it's core temperature.

Which atmospheric later is where earths northern and southern lights occur