On Earth, the combination of oceans, atmosphere and tectonic activity wiped out all visible traces of these formative collisions, but on the unaltered crust of the Moon the scars accumulated.
(the combination of oceans, atmosphere and tectonic activity; wiped out; all visible traces of these formative collisions; L:On Earth) (the scars; accumulated; )
the combination of oceans, atmosphere and tectonic activity the scars
wiped out accumulated
all visible traces of these formative collisions L:On Earth