Luster and composition are two characteristics used to classify minerals.
Their crystalline nature.
Texture and mineral composition are the two main items used to classify igneous rocks. Texture refers to the size and arrangement of mineral grains, while mineral composition refers to the types of minerals present in the rock.
The two kingdoms that are used to classify bacteria are archaebacteria and eubacteria.
The big two are the Rockwell and Mohs Scales.
The two broad categories of non-metallic mineral resources are industrial minerals and construction materials. Industrial minerals are used in manufacturing and include items like gypsum and salt, while construction materials are used in building projects and include items like sand and gravel.
There are several thousands of minerals, and many different ways to classify them. An easy way to separate them into two types is to call them either metallic or non-metallic.
CISC and RISC are the two categories that are used to classify CPU architecture. CISC is an acronym for complex instruction set computer.
Temperatures and participation
genus apecies
A Living Organism.
Cubic inches and cubic centimetres
Source and state are just two of the categories used to classify particulate matter. So, source identifies the origin as human- or nature-made while state indicates configuration as a liquid or solid.