natural banks which are sometimes built up by a river along the edges of its channel are called:

a.river bluffs
b.river cliffs
c.levees
d.slip-off slopes

2 answers

Natalia, Dina, Nyasha, or whoever,

Posting under multiple names fools no one.

You need to learn to go back into your textbook or study materials to find these answers – or learn to conduct simple searches. Enter each of the terms you listed until you find a definition that matches.

http://www.answers.com

http://en.wikipedia.org/wiki/Main_Page

http://www.google.com
Whatever your name is -- please do not keep posting under different names.

Also -- you seem to be fishing for answers for some online class. To show us that you're not trying to cheat, please indicate which of the answers is correct.
We'll be glad to check your answers.