During a clinic visit a4 year old girl suddenly yells don't sit on erin the parents wispers that erin is an imaginary friend what is the nurses best action

When you see distant streetlights through smog, they look dimmer and redder than they do normally. but when you see the same streetlights through fog or falling snow, they look dimmer but not redder. use your knowledge of the interstellar medium to discuss the relative sizes of the particles in smog, fog, and snowstorms compared to the wavelength of light.