Old rocks on Earth&#146;s surface are gradually reduced to tiny pieces, or sediments, by erosion caused by water, wind, or glacial ice. 2.
(s surface; are gradually reduced; to tiny pieces, or sediments; by erosion) (erosion; caused; by water, wind, or glacial ice)
s surface erosion
are gradually reduced caused
to tiny pieces, or sediments by erosion
by water, wind, or glacial ice