What must be done to classify minerals?
wash them Phylogeny bury them scratch them treatment Cladistics periodic table throw them
A B C D E F G H
Minerals are classified by their hardness.
Classifying minerals requires scratching those materials.
What must be done to classify minerals? (A) wash them (B) Phylogeny (C) bury them (D) scratch them (E) treatment (F) Cladistics (G) periodic table (H) throw them