Answer:
measuring seismic wave activity
Explanation:
the earths interior is made up of a number of layers such qs the crust, mantle, outer and inner cores.
Answer:
This region was formed when cracks in the Earth's crust created a rift valley, which is a “valley created when the part of land between the cracks in the Earth's crust drops down”. Two major waterways that are located within this landform region are the St. Lawrence River and Lake Huron.
Explanation:
It is considered one region!
