climate of a particular region. types of elements available in the crust. thicknesses of nearby rock layers. exposure of the elements to the environment.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: The abundance of a mineral at the surface of Earth most likely depends upon the
Possibilities:
- climate of a particular region.
- types of elements available in the crust.
- thicknesses of nearby rock layers.
- exposure of the elements to the environment.

types of elements available in the crust.