Downward erosion by a stream

extends a valley into a hillside
deepens a valley
both extends and deepens a valley
shortens a valley

Question

Downward erosion by a stream
 	
	extends a valley into a hillside
	deepens a valley
	both extends and deepens a valley
	shortens a valley

anonymous · Answer

@BIOCRYSTAL @bibby

anonymous · Answer

@mikurout

anonymous · Answer

flood plain

anonymous · Answer

The abrasion of a river floor by sand and gravel results in
 	
	downcutting
	headward erosion
	removal of regolith
	stream piracy

superhelp101 · Answer

i would say downcutting as my best choice

mikurout · Answer

deepens a valley.

anonymous · Answer

As the rate of a river's current decreases, which of the following happens?
 	
	coarse particles settle out first
	fine particles settle out first
	coarse and fine particles settle at the same time
	both coarse and fine particles stay suspended
@mikurout

mikurout · Answer

I am not sure.
But the answer should be option 1.
because they are heavier.

anonymous · Answer

When sand and gravel are whirled around by eddies in a river, they cause
 	
	regolith removal
	potholes
	stream piracy
	headward erosion