<h3>Questions: </h3>
What does a knickpoint indicate on a river profile
<h3>Answer: </h3>
A knickpoint is a steep section of a river's profile that can range in size from a single waterfall to a multi-kilometer high-gradient region.
Well I am wrong the answer is A for that helps keep the environment clean
The crust is the part you walk on, and it's the surface of the earth.
