 
     Milking bacteria
(I know Eukaryotes do not have a cell nucleus, but they don't have udders also, so... ;-) )
(I know Eukaryotes do not have a cell nucleus, but they don't have udders also, so... ;-) )
 
      
     Bacteria producing amino acids
 
     Plants producing biogas
Isolating houses with wood
Mixing concrete with starch
 
     Filtering smoke
