Automaton and sewage treatment plant: what they have in common

1. Step 1. Automaton — has part — Cam. Cams set the figures’ movements.
2. Step 2. Cam — is part of — Trip hammer. Cams on the shaft lift the hammer.
3. Step 3. Trip hammer — has part — Water wheel. The shaft was turned by a water wheel.
4. Step 4. Water wheel — uses — Gravity flow. Falling or flowing water turns the wheel.
5. Step 5. Gravity flow — is used in — Sewerage. Waste water flows down a gradient.
6. Step 6. Sewerage — has part — Sewage treatment plant. Treatment plants.

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