Step-by-step explanation:
Rocks in the UK can be very tough and impervious while other rocks are soft and likely to erode away there.
So the relief, the difference between elevations on a land's surface, vary all throughout because of some of the rock's durability.
The uplands will form near the most resistant rocks while others that are weak form the lowlands.
Strong rocks like ingenious and granite rocks are more revealing and stand high.
Rocks that are susceptible to erosion and weathering like limestone tend to be near low hills and valleys.