Sand is made when rocks break into smaller pieces. Over a long period of time, wind, frost, and rain work against mountain cliffs and break off pieces of rock which fall down the mountainside. As the rock bounces down, it breaks off other pieces of rock it hits, and also breaks into smaller pieces itself. The water of rivers and oceans ruch against rocks, abreaking them into smaller and smaller pieces. The heavy ice of glaciers scrapes and grinds the rocks it moves along. the ice carries the sand it has made and dumps it in other places. All over the world, the ocean waves tear at the rocks along the shore, wearing them down until finally the rocks are so small they become what we call sand. What is this story mainly about? a. wind, frost, and rain b. Making sand c. Journey of a rock d. Beaches around the world
What is (b) Making sand?