Which of the following is a basic building block of galaxies? Stars
Gas
Dust
All of the above

The correct option is;

All of the above

Explanation:

A galaxy is a massive system of stars (and their solar systems), dust, dark matter, stellar remnants, and interstellar gas held together by gravitational forces. The structures, histories and shape have been made known by Hubble's telescope in detail such that the interrelations of galactic groups and coordination of lone galaxies are detected

Examples of galaxies are Andromeda, Comet,  Bode's, Cosmos Redshift, Black Eye, and the Milky way galaxy.

their visual appeal is a sure hook into their content. but big books are also produced for pedagogical reasons, and using them in the classroom makes good teaching sense. an abundance of good children's literature in their lives is vitally important for young children as they strive toward independent reading.

poto chala majaban

explanation: