What factors might affect the rate of weathering of a tombstone

Not sure if this is multiple choice but this is what I say.

Wind, composition of the tombstone and the PH level f any moisture that may come in contact with the tombstone.

Hope this helps if I'm not too late :)

more words for this could be abiotic and biotic

abiotic: living organisms within an ecosystem

biotic: non-living organisms within an ecosystem