Surface, crust, mantle, and core
Answer:
Abrasion and Attrition both mean the wearing down of an object, however,
Explanation:
Atrition refers to the breaking off of particles (erosion) which occurs as a result of objects hitting against each other. Abrasion leads to surface-level destruction over time, whereas attrition results in more change at a faster rate.
Hope that helps, if you need clarification, comment to this!
That would be the Himalayas and have the highest mountain range in the world.
It's about the study of the earth. Like mapping, or just looking at different biomes or landscapes.