Which one are you talking about
Answer:
The countries once were joined in one piece called Pangaea. Animals lived ON the pate boundaries of Pangaea. The plates then moved apart.
Explanation:
I Think The answer is b I hope it helps ya
At the center of the Earth is the core, which has two parts. The solid, inner core of iron has a radius of about 760 miles (about 1,220 km), according to NASA. It is surrounded by a liquid, outer core composed of a nickel-iron alloy. The outer core is about 1,355 miles (2,180 km) thick.