Jigsaw puzzle pieces e steam turbine: o que têm em comum

1. Passo 1. Jigsaw puzzle pieces — faz parte de — Jigsaw puzzle. Cardboard pieces with tabs and slots.
2. Passo 2. Jigsaw puzzle — utiliza — Saw. Cut out with a fretsaw.
3. Passo 3. Saw — é utilizado em — Sawmill. The cutting tool is a saw.
4. Passo 4. Sawmill — tem como parte — Water wheel. Early sawmills were driven by water wheels.
5. Passo 5. Water wheel — evoluiu para — Turbine. The water turbine evolved from the water wheel.
6. Passo 6. Turbine — inclui — Steam turbine. A kind of turbine.

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