If a star has oxygen, then it is classified as an M-star. The chemistry of M-stars is relatively simple with water as the most important source of molecular opacity. However, transition metal oxides, particularly TiO, are also found to have prominent spectra.
M stars
from my text book: "The most luminous stars are so rare you find few in your survey region. There are no O stars at all within 62 PC of Earth. Lower-main-sequence M stars, called red dwarfs, and white dwarfs are so faint they are hard to locate even when they are only a few parsecs from earth."
Correct. M-type stars on the main sequence are called red dwarfs.
The Sun is a population 1 star, with a type of G2V.
The two most common shapes for galaxies are a spiral, or an ellipse (circle or oval). All other shapes are considered uncommon.
M stars
Bright stars are rare, dim stars are common, so class M are the most common that we can see, but even dimmer ones are postulated to be even more common.
The stars with an A-type spectrum are the hottest common stars, but early-stage stars with a B-type spectrum are even hotter. The order of temperature is B-A-F-G-K-M for common stars. The M-type stars are the coolest common stars and they definitely look red, e.g. Antares, Betelgeuse. Remember the order by learning this: Be A Fine Girl, Kiss Me!
Brown is the most common color.
M dwarfs are the most common
Orange
Um, they are all made in a factory. pretty much all even. You fail.
from my text book: "The most luminous stars are so rare you find few in your survey region. There are no O stars at all within 62 PC of Earth. Lower-main-sequence M stars, called red dwarfs, and white dwarfs are so faint they are hard to locate even when they are only a few parsecs from earth."
M stars contan metal oxides molecules.
According to m&m's official website it is blue. There are 22% blue in an average packet.
Correct. M-type stars on the main sequence are called red dwarfs.
Type-O are the hottest but there are very few. Then type-B, there are more of them but still not a lot. Then you have type-A, which are very common, then F, then G like the Sun, then K and then the coolest common ones, type M which are the red stars like Betelgeuse.