Answer:
from radioactive elements and leftover heat from earth's formation. i think
Explanation:
They can divide the region by making it harder to move, like mountains and water.
For an earthquake to generate a tsunami you need both water and vertical movement.
I might be wrong but I believe the answer is B. in the Appalachian Mountains. :)
Russians in large urban areas have a higher standard of living than those from rural regions. They also have better medical and social services, better schools, more interesting jobs, and pay less in rent.
