Most metals, such as iron and copper, do not occur in a pure state in Earthʹs crust, but occur within ______________.
A) the O horizon of the soil
B) ores
C) organic materials
D) igneous rocks
E) sediments

Question

Most metals, such as iron and copper, do not occur in a pure state in Earthʹs crust, but occur within  ______________.
A) the O horizon of the soil
B) ores
C) organic materials
D) igneous rocks
E) sediments

Quizplus · Accepted Answer

Most metals are found in ores, which are naturally occurring minerals that contain high concentrations of a specific metal. These ores must be mined and processed to extract the metal in its pure form.

Most Metals, Such as Iron and Copper, Do Not Occur