Answer: The correct answer is- C. over a long period of time.
Genetic diversity can be described as the sum of all the genetic characteristics, which correspond to the genetic makeup of all the organisms within a species.
Genetic diversity allows the organisms of a population to adapt to the changing environmental conditions as beneficial alleles allows the differential survival and reproduction of an organism.
Thus, a species develop genetic diversity over a long period of time that brings desirable modification or lead to the evolution of new species.
The correct answer is the crust.
The crust is present above the mantle and is the hard outer shell of the Earth. The crust is 0 to 32 km in thickness. The densest type of crust is oceanic crust with the density of 3.0 g/cm3. The mantle is the layer below the crust and above the core.
The mantle exhibits an average density of 4.5 g/cm3. The density increases with depth as the pressure increases. The outer core exhibits a density between the range of 10 g/cm3 to 12.3 g per cm3 and the density of the inner core is about 12 g/cm3. Showing that the inner core exhibits the highest pressure.
i would say they mix it with something else to make it cook easier