I am not an expert about this stuff but I think it is your second answer is correct but like I said I do not know.
Answer:
B the mantle becoming more massive and dense due to gravity
2. The populations of predators are dependent on the populations of their prey.
Pink snapdragons are a result of incomplete dominance. Cross-pollination between red snapdragons and white snapdragons result in pink when neither the white or the red alleles are dominant. The fruit color of eggplants is another example of incomplete dominance.