A. Silica
B. Feldspar
C. Calcium carbonate
D. Amorphous material
Correct Answer: Amorphous material ✔
Last Updated: February 07, 2020
A. Silica
B. Feldspar
C. Calcium carbonate
D. Amorphous material
Correct Answer: Amorphous material ✔
Last Updated: February 07, 2020