Pot lid and bellows: what they have in common

1. Step 1. Pot lid — is part of — Saucepan. A cap.
2. Step 2. Saucepan — evolved from — Pottery. The first pots were ceramic.
3. Step 3. Pottery — is made of — Clay. Vessels are shaped from clay.
4. Step 4. Clay — is material for — Bloomery. A bloomery is a clay shaft.
5. Step 5. Bloomery — has part — Bellows. Bellows blew in air for a high temperature.

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