Answer:
Sediments from a river bed are carried downstream, creating a deep, narrow channel.
Explanation:
the water played role in forming the channels. Broken English sorry!
If reproduction didn't exist, all species would eventually go extinct.
Well to be fair no matter what happens, a will always happen no matter how wholly fold is chewed. However because chime is the byproduct of chewing and saliva. Your body must be able to break down the food into a smaller and easy to absorb form so if you can't do it with the mouth, the stomach is just going to have to do the job.
So "D" is the correct answer
