Question

guided practice
which is a characteristic of rocks or minerals that make up ores?
a. they contain silty or sandy soil.
b. they contain metals or nonmetals.
c. they are chemically fused together.
d. they are either metamorphic or sedimentary.

Explanation:

Ores are naturally occurring rocks/minerals that contain valuable metals or nonmetals that can be extracted economically. Option A is incorrect because soil components are not related to ores. Option C is incorrect; ores are not defined by being chemically fused (this describes some igneous rocks). Option D is incorrect because ores can be igneous, sedimentary, or metamorphic, not just the two listed.

Answer:

B. They contain metals or nonmetals.