What are the effects from weathering and mass movement on a cliff coastline?

Weathering can weaken the cliff by breaking down rock particles, making it more susceptible to mass movement. Mass movement, such as landslides or rockfalls, can cause the cliff to erode rapidly, leading to increased coastal retreat and potential hazards for those living near the coastline. Over time, a combination of weathering and mass movement can alter the coastline's shape and stability.