00:10
00:09
00:08
00:07
00:06
00:05
00:04
00:03
00:02
00:01
| process where the surface of the earth is worn away by the action of water, glaciers, winds, waves |
| tectonic boundary where two plates are moving toward each other |
| block lava | |
| —n | |
| volcanic lava occurring as rough-surfaced jagged blocks | |