question: the Moh's scale of hardness is used by doing what to the materials
choices.text: heating tool extensions protection classified scratching as a base how they move Cladistics
choices.label: A B C D E F G H
fact2: To figure out the hardness of a mineral, the Moh's scale of hardness is used.
combinedfact: the Moh's scale of hardness is used by scratching the materials
formatted_question: the Moh's scale of hardness is used by doing what to the materials (A) heating (B) tool extensions (C) protection (D) classified (E) scratching (F) as a base (G) how they move (H) Cladistics