Rocks interacting with wind over long periods of time causes weathering.
Smaller rocks come from the breakage and weathering of bedrock and larger rocks.
Smaller rocks come from the interaction of bedrock with wind over long periods of time.
Smaller rocks come from the interaction of bedrock with what over long periods of time
Options:
a) volcanoes
b) wind
c) sunlight
d) years
e) force
f) soils
g) earth
h) animals