Broken bits of rock lie on top. The tiniest bits of rock make up sand and soil. Beneath Earth’s crust is another layer of mostly good rock, known as the mantle. Swimming pools of melted rock, or magma, kind within the mantle. Networking web sites which include MySpace and YouTube https://rocksticks12344.dreamyblogs.com/36673029/how-sticks-of-rock-can-save-you-time-stress-and-money