Answer:
The answer is A) more, older than.
Explanation:
It says that the rocky mountains are older and that Shenandoah National Park have undergone more erosion in the passage.
Physical geography focuses on natural processes of the earth, including climate and plate tectonics, whereas human geography studies the effect and behavior of humans and how they relate to the physical world. The two fields of geography are interrelated.
it is 10 because you have to set up an equation to get the answer