Chromium and oil well: what they have in common
- Step 1. Chromium — is material for — Nichrome. Chromium.
- Step 2. Nichrome — is made of — Nickel. Nickel.
- Step 3. Nickel — is material for — Afterburner. The chamber is made of nickel superalloys.
- Step 4. Afterburner — uses — Kerosene. It burns extra fuel in the exhaust.
- Step 5. Kerosene — is made of — Crude oil. A fraction of crude oil.
- Step 6. Crude oil — uses — Oil well. Oil is extracted from wells.