Question

Where does freeze-thaw action happen?

A. In desert regions.
B. At high altitudes.
C. In polar regions.
D. In underground caves.

Answer 1

The freeze-thaw action happens in polar regions, where water freezes on the surface and below it during winters. This phenomenon can cause erosion and weathering of rocks.

Step-by-step explanation:

The freeze-thaw action happens in polar regions. During winters, when the temperatures drop below freezing, water freezes on the surface and a few meters below it. Water is densest at 4°C and retains its liquid form below the water surface, where the ice layer is. This phenomenon can cause erosion and weathering of rocks in polar regions.