Why does water erosion is most likely to have an effect on land forms in a hilly region that has a warm and rainy climate?

Water erosion is more likely to have an effect in hilly regions with warm and rainy climates because the combination of abundant rainfall and sloping terrain increases the amount of water flowing downhill, leading to more erosion. The warm climate can also enhance chemical weathering, further accelerating erosion processes. These conditions make the landforms in such regions more susceptible to changes caused by water erosion.