Question

what is a rock ? in one sentence​

Answer 1

Answer:

A naturally formed , inorganic solid that has a definite crystalline structure.

Answer 2

Answer:

$\huge{\tt{\red{}\green{A}\purple{N}\pink{S}\blue{W}\orange{E}\red{R}}}$

A rock is a solid mass of geological materials. Geological materials include individual mineral crystals, inorganic non-mineral solids like glass, pieces broken from other rocks, and even fossils. ... A rock can be composed of only one type of geological material or mineral, but many are composed of several types.