Life support backpack and plough: what they have in common

1. Step 1. Life support backpack — is part of — Spacesuit. A backpack with oxygen, air purification and temperature control.
2. Step 2. Spacesuit — is made of — Nylon. The outer layer is nylon and other synthetic fabrics.
3. Step 3. Nylon — is material for — Toothbrush. Nylon bristles (1938).
4. Step 4. Toothbrush — has part — Handle. A plastic handle.
5. Step 5. Handle — is part of — Plough. Handles for steering the plough.

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