Which is a characteristics of a rock

Hope this helps :)

Explanation:

Rocks are classified according to characteristics such as mineral and chemical composition, permeability, texture of the constituent particles, and particle size. These physical properties are the result of the processes that formed the rocks.

To identify a rock you can use:

Hardness.

Cleavage.

Luster.

Color.

Streak rock powder.

Texture.

Structure.

landlessness of ordinary people

^^something like that^^^

answer they showed that organic molecules such as amino acids could be produced from inoragnic molecules;