Minerals vs. Rocks. A mineral is a naturally-occurring substance formed through geological processes that has a characteristic chemical composition, a highly ordered atomic structure and specific physical properties. A rock is a naturally occurring aggregate of minerals and/or mineraloids.
6. found in the upper right of the H-R diagram -- A
7. a very hot and very luminous star --- B
Explanation:
The red giant is a luminous star with a mass in the late period of its stellar evolution and as the outer atmosphere inflated and is tenuous and maks the radius much larger and the temperature up to the 5000k.
While the main sequence is the continuous and a distinctive and is a continuous band of the stars appears in the stellar colors and the brightness. The majority of the stars in the galaxy are formed by these stars and the sun is an example.
While the white dwarf is degenerated and is composed of the hot and the dim stars these have a high density and mass.
