Fact 1: Erosion causes deposition.

Fact 2: Deposition landforms also occur forming stalactites and stalagmites .

Given the two facts above, answer the question "What contributes to forming stalactites and stalagmites?" with the following options: 
- Shadows
 - rainfall
 - Bats
 - Columns
 - heat
 - flooding
 - Erosion
 - calcite


 

       Erosion  