Diffusion of gases can be explained by

Diffusion of Gases. ... The diffusion is a net movement of atoms or molecules from highly concentrated region to low concentration region. In other words, the movement of atoms or molecules from high chemical potential region to the low chemical potential region.

Explanation:

i'm pretty sure it is letter c.) car

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.