Question

the source of material around as​

Answer 1

Definition. The geographical origin of naturally occurring vegetable, animal or geological materials which either have been used to form an object or form specimens or deposits in their own right eg a quarry source for stone, country of origin of timber, geological outcrop for imported stone or fossil.

Answer 2

Material, oral, written sources.

These sources occur naturally. For example vegetables, animals, and the geographical materials.

The geographical sources are such as source of stone, timber, outcrop etc.