Answer the following question: Fact 1: Wind and rain cause erosion. Fact 2: Major erosion of beaches occurs. Given the two facts above, what causes loss of beaches?

Pick your answer from: 1). Pollution; 2). deforestation; 3). solar flares; 4). sunlight; 5). animal activity; 6). Physical weathering; 7). wind and rain; 8). flooding;
Answer:
7).