answersLogoWhite

0

A rock is a solid natural object composed of one, or in most instances, a combination of minerals. Rocks can lithify from sediments, solidify from melt, precipitate out of saturated solutions, or metamorphose from other rock types. The first rocks on Earth were igneous rocks, formed from the cooling of molten material on the surface.

User Avatar

Wiki User

15y ago

What else can I help you with?