Earth is divided into several layers with variation in physical, chemical and seismic(underground movement, vibration at the interior of the Earth) properties.
(0-40)km -Crust
(40-400)km -Upper mantle
(400-650)km -Transition region
(650-2700)km -Lower mantle
(2700-2890)km -D'' layer
(2890-5150)km -Outer layer
(5150-6378)km - Inner core
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