Where are my BTS arm​

What are two reasons for why a species might disappear from the fossil record?

Mutations associated with albinism affect proteins involved in synthesis

There is a liquid capsule inside a cup full of liquid. the cup full of liquid has salt in it and the liquid capsule has no salt in it. in which direction will the solvent flow? a. the salt does not have to move b. from the capsule to the larger cup c. equally between the capsule and the cup d. from the larger cup to the capsule