Contact between solid mineral deposits over long periods of what causes them to smooth
time vacuum widen cracks clocks years Bend instant
A B C D E F G H
Rocks are actually solid mineral deposits.
Contact between solid mineral deposits over long periods of time causes them to smooth
Contact between solid mineral deposits over long periods of what causes them to smooth (A) time (B) vacuum (C) widen (D) cracks (E) clocks (F) years (G) Bend (H) instant