Question

an aggregate is one type of land resource. what is an aggregate? a layer of solid rock found beneath soil the top layer of soil a natural mixture of sand, gravel, and crushed stone a naturally occurring mineral or rock

Explanation:

Aggregates are natural mixtures of sand, gravel, and crushed stone used in construction and other industries. They are not a layer of solid rock beneath soil, the top - layer of soil, or just a single naturally occurring mineral or rock.

Answer:

a natural mixture of sand, gravel, and crushed stone