Stalactites are formed by deposition.
Soils are sand, clay, limestone, and organic deposits.
Soil, sand, clay and limestone can form stalactites.
Soil, sand, clay and limestone can form what?

[a] detritus
[b] stalactites
[c] swamp vegetation
[d] coral reef
[e] fossil fuels
[f] Sediment
[g] aqueous solution
[h] growth