Question

Which of the following is an example of chemical weathering?


A.)A stream rounds and smoothes rocks into pebbles.


B.)A growing tree root splits a boulder in two.


C.)Freezing and thawing rainwater widens a crack in a sidewalk.


D.)Acid rain discolors and disfigures a limestone statue.

Answer 1

Freezing/thawing is an example of mechanical weather through I think what's called wedging. Tree roots are also mechanical. Streams are erosion from nature.

So that gives us D, Acid rain discolors and disfigures a limestone statue.

Plus, y'know, /acid/ and chemicals

Answer 2

exactly!

Answer 3

Was the term ice wedging?