The center of earth is called the core. It is made up of iron, nickel, and more. It's sturdy, like metal.
Pros:save time, less hassle and worry , and saves water. cons: takes A couple of days to finish , can get damaged fast , it cost too much
Answer:
Lighter, warm material rises while heavier cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth.
ITS B because the temp changes so it becomes cold
