Only smog is caused by humans.
Smog
when fog and smoke combined it forms smog
Most often it's from smog. It appears that color as it's low in the sky, just over the horizon, where the concentration of smog is greatest. Even in areas with clean air there are particles in the atmosphere that reflect light and cause the red.
Fog, sea mist, smog, dust storm, dirty glasses, dementia, or hallucinations.
Smog -- smoke and fog
Smog.
yes,there are two different types of smog i.e summer smog and winter smog
The Troposphere
I think so, i believe that the fumes/smoke ect rise up and combine with the water in clouds to from dark clouds. Smoke+Fog=Smog
smog
Photochemical smog is a type of smog made when hydrocarbons and nitrogen oxides mix with sunlight.
There are two types of smog, the good old smoke and fog type and photochemical smog ( a mixture of ozone, VOCs, PAHs and other nasties) For both types the answer is no.
smog
The hazy clouds that hang over some cities is called smog
The night sky (unless impeded by light pollution and/or clouds or smog) is filled with stars.
Well clouds can be as high as they want.(Just not in space because there is no moisture.) Or they can be as low as the ground.(Like smog, fog, ect)
Smog, which is a mixture of industrial pollution and natural water vapour as clouds.