Aluminium foil and liquid-propellant rocket engine: what they have in common

1. Step 1. Aluminium foil — is material for — Tetra Pak. A foil layer.
2. Step 2. Tetra Pak — is made of — Polyethylene. Polyethylene.
3. Step 3. Polyethylene — is made of — Crude oil. Made from petroleum products.
4. Step 4. Crude oil — is material for — Kerosene. A fraction of crude oil.
5. Step 5. Kerosene — is material for — Reusable rocket. The fuel is kerosene or methane.
6. Step 6. Reusable rocket — has part — Liquid-propellant rocket engine. Liquid-propellant engines.

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