the erath is not just a big floting rock with animals on it. it has 4 layers that it is made of. these layer are all different sizes and temperatures. one of the smallest layers is ther crust, the crust is te thinnest layer and also the top layer witch we live on. the the mantle is the largest and also apart of the outer core those two togethyer are called the lithosphere. cliche-ly, last but not least the inner core witch is the hottest core.these layer are not just ther to be there they keep the earth up and running.
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