Fact 1: The surface of a beach is formed by mechanical weathering. Fact 2: Sandy and dusty surfaces get hotter during the day, like beach sand. Given the two facts above, what is a beach formed by?

Pick your answer from: (1). movement of tectonic plates. (2). heat change. (3). mechanical weathering. (4). By coral exoskeletons. (5). seasonal changes. (6). patch reefs. (7). sedimentation. (8). Nurseries of the ocean..
The answer is:
(3).