Choose the word that correctly completes the analogy. limestone : rock: calcite :
erosion
marble
Caves can be formed many ways.
Some caves are caused by
erosion. Waves crashing against a
rock for millions of years erode, or
wear away, the rock, forming a
cave. Fuller Caverns was formed
when water combined with acids.
Over time, this water-and-acid
solution dissolved the limestone.
This natural process is called
dissolution. Limestone is the most
common type of rock from which a
mineral
aragonite