The answer is a because if you add a base the ph levels increse
An autosomal trait is a characteristic arising from genes located on chromosomes that are not gender determining.
There was more erosion in the Colorado Rockies scenario where there was steady rain compared to the scenario in the same area where there was only a drizzle. There is more erosion because the steady rain increased the volume of the river more than the drizzle did.
I believe that its meiosis but I could be wrong.