It is already simplified unless the variables have a value
The coolest layer is the crust. The crust is on the surface of the earth (where we are) . Inner Core
Answer:
The answer is A. The process of breaking down rock and soil.
Explanation:
An example of this will be the grand canyon because it use to be filled with water and all the water was wearing away the rock.
The equator and prime meridian meet closet to the continent of Africa.
Hope this helps! XD :)