England, Wales, Scotland, and Northern Ireland.
Is 195 countries in the world
Answer:
<u><em>A waterfall is an erosional landform, which occurs where there is a layer of hard rock on top of a layer of softer rock. Erosional processes such as hydraulic action and abrasion occur as the river flows downstream, however differential erosion takes place as the softer rock erodes faster.</em></u>
Explanation: