You are presented with the question "What are speleothems formed by?" and the following answer choices: 
- calcite
 - craters
 - deposition
 - tornadoes
 - deuterostomes
 - tiny polyps
 - haploid plants
 - hurricanes

Now knowing that stalactites are formed by deposition and stalactites and stalagmites are common speleothems, choose the best answer.


 

   deposition      