Answer:
Crust: form into a hard outer layer.
Mantle: is the part of the earth between the core and the the crust is the MANTLE.
Outer Core: Earth's outer core is a fluid layer about 2,400 km (1,500 mi) thick and composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle.
Inner core: The inner core is the very center of the Earth, and the hottest part of the planet.
Thickness: Thickness in geology and mining refers to the distance across a packet of rock, whether it be a facies, stratum, bed, seam, lode.
Composition: Core, mantle, and crust are divisions based on composition.
Explanation:
