Students were exploring a coastal area close to their high school. the rocks along the coast are limestone. besides being very smooth, there were numerous circular holes in the limestone rocks. the students hypothesized that the circular holes were caused by wave action. what would you say to the students about their hypothesis? a) the circular holes were caused by organisms that live in and around the rocks. b) abrasion by boats and other debris mechanically weathered the limestone rocks at the coast causing the circular holes. c) the students are correct. wave action is a type of physical weathering that caused the circular holes in the limestone rocks. d) the circular holes were caused by chemical weathering of limestone with ocean water rather than physical weathering by