C. Increased genetic variation
In my Biology Honors Class, they taught about gastric juice, or also known as (p H) which is formed by stomach glands, is very acidic and can seriously mess up enzyme trypsin functions. After all, enzymes are a type of catalyst that help break down food, which means that enzymes are a sort of digestive acid as well. Hope this helps!
Answer:
oxygen enters blood cells by 'diffusion'
The answer is B: P
in which the P stands for Parent generation
hope this helped!
p.s. if you found this helpful please mark my answer as brainliest! it would mean a lot to me, thanks!