Sure, a boulder is a large rock.
It can be both
it a bumpy smooth metamophic rock
Obsidian
The rock described would be classified as an extrusive mafic igneous rock.
Deep Purple in Rock was created on 1970-06-03.
obsidian
Yes, it is.
some from weathering
Sure, a boulder is a large rock.
Pavement or smooth rock runoff affects waterways because they create more impervious surfaces.
no, deep purple is not in the ock hall of fame. srry. :(
it is cleavage
Shale
A rock is a option!
it can be rough or smooth
smooth and rough