I think is c i hope i am right if not that k k
Just let me know k
I believe the correct answer would be C. Sartorius i believe this is the answer, after doing some research on gO0gLe.
Answer:
I know you only need two, but here:
--Subsidence and sinkholes.
--Sinkholes and caverns.
--Waterfalls and rapids.
--Deltas and levees.
--Erosion and abrasion.
Explanation: