Answer:
the ural mountains are very tall and are a barrier to human movement.
Answer:
The first question is b since the river starts from the source (as said in the name)
Explanation:
For 1. 2 this diagram will help you. (sorry it's sideways that was the only way it could fit.) ❤❤
Answer: the downhill movement of material during mass wasting
settling out of a fluid
Explanation: