Road markings and voltaic pile: what they have in common

1. Step 1. Road markings — uses — Paint. Paint.
2. Step 2. Paint — has part — Dye. A pigment.
3. Step 3. Dye — uses — Fermentation. Some dyes (indigo) were obtained by fermenting plants.
4. Step 4. Fermentation — is a kind of — Chemical reaction. A biochemical reaction.
5. Step 5. Chemical reaction — includes — Electrolysis. Electrolysis is a chemical reaction driven by an electric current.
6. Step 6. Electrolysis — evolved from — Voltaic pile. The first electrolysis of water was powered by a voltaic pile.

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