A, I’m pretty sure, Meiosis helps with genetic diversity
Parietal cells within the stomach lining secrete hydrochloric acid that lowers the pH of the stomach. A low pH (1.5 to 2) activates pepsin. Acetylcholine, gastrin, and histamine stimulate the proton pump in parietal cells to release hydrogen ions and decrease pH.
point b i think, because you have to see the amount of steepness in the slope.
Answer: Wo meiyou xiansuo
Explanation:
