Which vitamins are made by the bacteria in the large intestine?

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

Human genes only differ by less than percent. a. 1 b. 6 c. 11 d. 16

What is the one part of the nucleotide  that differs among the other different nucle  tides?