Dust in the atmosphere represents:

a suspension.

a colloidal system.

a solution.

none of the above

Dust in the atmosphere represents suspension. It is collborately shaped during colliding and collapsing of the interstellar mediums this is influenced by the gravitational attraction of the atoms and particles in the entites. Hence, there are three types of nebular namely, are classical nebula, diffuse nebula, planetary nebular and supernova remnants.