How does the temperature and pressure change inside the earth, moving downward from the crust to the core?

a.) both temperature and pressure decrease.
b.) both temperature and pressure increase.
c.) temperature increases, but pressure decreases.
d.) temperature decreases, but pressure increases.

Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.