Question

How are rocks useful. Mention two advantages.

Answer 1

Explanation:

Before the first metal (copper) was known to man, Rocks were the only hard substance used for different purposes. The periods of usage of rocks has been studied under three sections namely Paleolithic (Old Stone age), Mesolithic (Middle Stone age), and Neolithic (New Stone age). Later Copper was discovered and the Chalcolithic age started.

Early human used rocks for hunting, shaping softer rock with harder ones, making spear tips, sharp-pointed hammer type tools for piercing skull of animals, flat-edged rocks for cutting flesh and other stuffs as suc

Answer 2

Answer:

uses of rocks

Explanation:

1) Rocks are used for building various things.

2) In olden times rocks were used as weapons.