earthquakes erosion landslides weathering
I gave my students this multiple choice question: At some places in Florida, sand on the beaches is being reduced. New sand is brought from other areas and spread on the beaches. What process causes this reduction to the beach sand?

Only one answer is correct among these 4 choices:
- earthquakes
- erosion
- landslides
- weathering

Could you tell me which one is correct?

erosion