Natural openings on the surface, leading to caves are formed by what?
hydrogen and oxygen aqueous solution precipitation calcite erosion flow of electrons Calcium carbonate Physical weathering
A B C D E F G H
Natural openings on the surface that lead to caves are called sinkholes, or swallow holes.
Natural openings on the surface that lead to caves are formed by precipitation
Natural openings on the surface, leading to caves are formed by what? (A) hydrogen and oxygen (B) aqueous solution (C) precipitation (D) calcite (E) erosion (F) flow of electrons (G) Calcium carbonate (H) Physical weathering