The relative density of dust to gas is least in which place?

Question

Quizplus · Accepted Answer

The atmosphere of Earth has a much higher density of gas compared to the amount of dust present, making it the place with the least relative density of dust to gas. In contrast, interstellar medium, dark nebulae, molecular clouds, and reflection nebulae have a relatively higher density of dust compared to gas. The atmosphere of Earth has the lowest relative density of dust to gas because it is mostly composed of gas with only small amounts of dust particles.

The Relative Density of Dust to Gas Is Least in Which