Explain why water erosion is most likely to have an affect on landforms in a hilly region that has a warm and rainy climate

If it is flowing water, it tends to wear away at dirt and stone. But if the climate is warm and rainy ... the erosion happens even quicker due to the temperature of the water. Warmer water causes dirt or other particles to dissolve or break away from landforms. Also, the constant amount of rain is washing away whatever it touches. For example: The Grand Canyon. The Grand Canyon has a warm climate and water continuously washes through the valley.