(Probably) Mountain soils because they are in cold temperatures and there is chemical weathering and erosion causing the soil to have a more difficult environment to form in.
answer: white fur works as a camouflage against the white snow, allowing polar bears an advantage when hunting for food and hiding from predators
<span>The radioactive uranium decays into its daughter product, lead. It would do this in magma as well, as nuclear decay depends on forces within the atom, not on the phase of the material in which the atom is a part.</span>