Dam and monitor: what they have in common

1. Step 1. Dam — is part of — Hydroelectric power station. The dam creates the head of water.
2. Step 2. Hydroelectric power station — has part — Electric generator. Generators.
3. Step 3. Electric generator — is part of — Bike light with dynamo. A dynamo.
4. Step 4. Bike light with dynamo — has part — LED. An LED.
5. Step 5. LED — is part of — Liquid-crystal display. LED backlighting.
6. Step 6. Liquid-crystal display — is part of — Monitor. Then LCDs.

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