Posted: Sun Mar 21, 2021 2:50 pm
by Don Schaeffer
https://www.youtube.com/watch?v=LuFx1yd78y0

I examined a dried deposit in the back of a little plastic bird
that was cast into a flower pot. When the stiff substance began
to open up and dissolve in a drop of water, I realized that the
substance was nothing less than a dried biofilm.