Stilt footrests and greenhouse: what they have in common
- Step 1. Stilt footrests — is part of — Stilts. Platforms at height.
- Step 2. Stilts — uses — Lever. An extended support.
- Step 3. Lever — is used in — Shaduf. A shaduf is a lever with a counterweight.
- Step 4. Shaduf — is used in — Irrigation. The shaduf fed water into the canals.
- Step 5. Irrigation — is used in — Greenhouse. Watering plants.