Cotton and kiln: what they have in common

1. Step 1. Cotton — is material for — Bandage. Gauze.
2. Step 2. Bandage — is part of — Plaster cast. A bandage base.
3. Step 3. Plaster cast — is made of — Lime. Plaster of Paris is calcium sulfate.
4. Step 4. Lime — uses — Kiln. Lime is made by burning limestone.

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