Padlock body and greenhouse: what they have in common

1. Step 1. Padlock body — is part of — Padlock. A case with the mechanism.
2. Step 2. Padlock — is made of — Bronze. And bronze.
3. Step 3. Bronze — uses — Casting. Bronze objects were cast in moulds.
4. Step 4. Casting — is used in — Window glass. The panes were cast in moulds.
5. Step 5. Window glass — is part of — Greenhouse. It lets light in and holds heat.

Open Evothings