The gas form of water is water vapor.
Smog is an abiotic factor affecting a biotic factor(s).
This is because smog isn't a living organism so it is abiotic while humans are multicellular organisms so therefore, they are biotic factors.
Smog has a negative effect on many biotic factors.
Haploid chromosome number in humans is 23
In short, Your Answer would be 23
Hope this helps!