This A3 plot was made for @sableraph's weekly contest on theme "Chemistry". 4 inks on watercolor paper.
Air is composed mostly of dinitrogen (78%), dioxygen (21%) and only a few other things.
A bunch of H2O molecules are floating around but will you spot the single CO2?
![](/images/plots/677photo.jpg)
![](/images/plots/677z.jpg)
![](/images/plots/677plot1.jpg)
I have also made a A3 variant:
![](/images/plots/678.jpg)
![](/images/plots/678photo.jpg)