3. What sedimentary rock is made up of pieces
of shells?
6. EXPLAIN: Why does sedimentary rock form
in layers?
7. EXPLAIN: Why must water evaporate or be
pressed out for sedimentary rock to form?
6. Sedimentary rock forms in layers because of the order they were formed. The older rocks will form first and as time goes on, rock forms above it to create a new layer, and so on.
