Amuddy stream quickly flows downhill. when it reaches a flatter area, the steam moves more slowly, and the water clears. explain why the stream changes appearance

It moves slower because it isn't as steep and gravity slows it down. And it changes appearance because the water can't hold as much sediment since it is more shallow.

Explanation:

The muddy creek runs rapidly downhill because of the steep relief and lack of restraint, however when it reaches the flat part the creek moves slower because it does not have the influence of gravity on a steep substance. In addition, a stream does not have deep water, so all the subject that was in the water was retained as the water moved, so it was clean.

There are actually five characteristics that all vertebrate have in common; a vertebral column composed of multiple vertebrae (spine), a cranium (the bone that envelopes the brain) , a closed circulatory system, nural crest , and a pronounced cephalization .