Respuesta :
upstream, angular rocks will be smoothed out by the current of the stream if they arrive downstream. the fact that they still preserved sharp edges gives you a hint they did not travel far down stream.
The Upstream and downstream stream movement
The movement if the river which is upstream and the downstream direction is indicated by the origin and destination of the river. The shape of the sediments and the paths followed by the river tells us about the up and the down movement.
Hence the answer is a matter that is sediments are carried and transported by the river.
- The movement if the stream take place in varying direction and sediments flow will e affected in the similar manner.
- As the streams carrie and deposits these sediments on is way the angles it moves the sediment matter noticed to take a shape.
Thus the option D is correct.
Learn more about the walking downstream.
brainly.com/question/17564242.