Sand grains are generally broken rock particles that have been formed by physical weathering, or they are the resistant components of rocks broken down by chemical weathering.
(Sand grains; are generally broken; ) (rock particles; have been formed; by physical weathering) (they; are; the resistant components of rocks broken down by chemical weathering) (the resistant components of rocks; broken down; by chemical weathering)
Sand grains rock particles they the resistant components of rocks
are generally broken have been formed are broken down
by physical weathering
the resistant components of rocks broken down by chemical weathering
by chemical weathering