The youngest rock layers are deposited on the top of the Grand Canyon As time passes, mechanical and chemical forces can begin to break down landforms and cause them to change.
(The youngest rock layers; are deposited; on the top of the Grand Canyon) (time; passes; ) (mechanical and chemical forces; can begin; ) (mechanical and chemical forces; to break down; landforms) (mechanical and chemical forces; to cause; them to change) Context(mechanical and chemical forces to cause,List([86, 160))):(them; to change; )
mechanical and chemical forces to cause,List([86, 160))
The youngest rock layers time mechanical and chemical forces mechanical and chemical forces mechanical and chemical forces them
are deposited passes can begin to break down to cause to change
on the top of the Grand Canyon
landforms
them to change