Bolivia, the fourth-largest tin producer, has traditionally been a mining country-the answer is tin
CMEs. Coronal mass ejections
It's an area that is organized around a focal/nodal point where there is a central focus. The central diminishes as you move outwards from the point. Generally used to display information about economic activities.
Answer:
Secondary waves another name is S-waves
Explanation:
The border separates Sonora and Chihuahua is Natural boundary