Weathering and erosion slowly chisel ... forming an acidic concoction that dissolves rock. For example, acid rain dissolves limestone to form karst, a type of terrain filled with fissures ...

With bipartisan leadership and cooperation between the U.S. and Canada, acid levels slowly reduced, and recent samples ...

including human factors such as acid rain. The contrast between eratic and limestone beneath can act as a very stark example of different rates of erosion for different rock types which could be ...

Exposed rocks along the coastline can be broken down by the processes of weathering ... Rainwater and seawater can be a weak acid. If a coastline is made up of rocks such as limestone or chalk ...