Answer:
Igneous and metamorphic processes.
Step-by-step explanation:
Metal ores are found in very old geological structures of the precambrian (proterozoic) era. They were formed mainly by igneous and metamorphic processes and are non-renewable natural resources, that is, that cannot be replaced by nature.
Metal ores are for the production of pure metals for industrial use. Metals are classified as industrial goods because they make it possible to expand various manufacturing productions, production goods, such as equipment (agricultural, industrial and transport), and consumer goods, such as the metallic materials used in the packaging of many products.