Genetically modified crops und fass: was sie gemeinsam haben

1. Schritt 1. Genetically modified crops — nutzt — Mineraldünger. Intensive farming combines varieties and fertilizers.
2. Schritt 2. Mineraldünger — nutzt — Sulfuric acid. Superphosphate is made with sulfuric acid.
3. Schritt 3. Sulfuric acid — wird verwendet in — Chemiefabrik. The first chemical plants produced sulfuric acid and soda.
4. Schritt 4. Chemiefabrik — ist hergestellt aus — Backstein. The furnaces and towers are brick.
5. Schritt 5. Backstein — ist Material für — Bogen. Arches were built of brick or stone.
6. Schritt 6. Bogen — funktioniert wie — Fass. Staves squeezed by hoops hold their shape by the same compression as the stones of an arch.

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