2.  A. color  B. Texture

4.  A. Pressure over time binds sediments into rocks.  B. Heat and/or pressure change the minerals in a rock.

6.  A. Sedimentary  B. Metamorphic

8.  A. clay  B. sand

10.  A. topsoil  B. subsoil

12.  A. Halite  B. Quartz

14.  A. color and luster  B. hardness and streak

16.  A. rainfall  B. decay of plants and animals

18.  A. the top layer  B. the middle layer  C. the bottom layer

20.  A. igneous  B. sedimentary

22. Don’t forget to study!