In regard to the peppered moths, what has happened to the white peppered moth if the cities are now cleaner? A. Their population has not changed.
B. There population is equal to the dark colored moths.
C. There population has increased.
D. There population has decreased.

The table below shows the elements that mainly comprise each of the four layers of earth: elements in layers layer main elements crust oxygen, silicon mantle iron, magnesium outer core iron, nickel inner core iron which of these elements make up the layer that is 0.2 to 1.1 percent of earth's total diameter?