Video game and greenhouse: what they have in common

1. Step 1. Video game — is used in — Game console. It runs games.
2. Step 2. Game console — has part — Microprocessor. A processor.
3. Step 3. Microprocessor — evolved from — Electronic calculator. The Intel 4004 was designed for a Busicom calculator.
4. Step 4. Electronic calculator — has part — Solar panel. Many run on a solar cell.
5. Step 5. Solar panel — has part — Window glass. Tempered cover glass.
6. Step 6. Window glass — is part of — Greenhouse. It lets light in and holds heat.

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