What can be used to make debris?
erosion rivers a hammer heat wind water pump c-clamp screwdriver
A B C D E F G H
Sledge hammers can be used to break especially hard ledges of rock.
hammers can cause debris
What can be used to make debris? (A) erosion (B) rivers (C) a hammer (D) heat (E) wind (F) water pump (G) c-clamp (H) screwdriver