Question

1. why are brick, steel, and glass not classified as minerals even though they are solids, and they come from substances found in earths crust?

they are not naturally occurring.
they all have a crystalline structure.
they are organic substances.
they are inorganic substances.

Explanation:

Minerals are defined as naturally occurring inorganic solids with a definite chemical composition and crystalline structure. Brick, steel, and glass are all human-made (synthetic) materials, not formed naturally in Earth's crust, which excludes them from being classified as minerals. The other options are incorrect: they do not have a crystalline structure (glass is amorphous), they are not organic, and being inorganic does not disqualify them (many minerals are inorganic).

Answer:

A. They are not naturally occurring.