A-Weathering: wear away or change the appearance or texture of something by long exposure to the air.
Example:soil,rocks, minerals
B-erosion: The process of eroding or been eroded by wind water or other natural agents.
Example: removes soil,rock,or dissolved minerals
Tectonic plates where they meet
None of these seem to be correct, but it seems c is due to a disproved myth that essentially is the only thing close to an answer.
Answer:
A mutation happens by chance it cause by the rna polymerase copying the wrong piece of code from your dna leading the wrong protein to be made.
This could either be beneficial or not as it causes variation in a species helping them evolve becuase of survival of the fittest or threatening extinct of the entire specise if their environment has changed as it could threat their survival therefore having variation with in species could help increase their survival rate
