Aeration tank with bubbling water e oil well: o que têm em comum

1. Passo 1. Aeration tank with bubbling water — faz parte de — Sewage treatment plant. A tank where activated sludge breaks down pollutants.
2. Passo 2. Sewage treatment plant — tem como parte — Compressor. Blowers supply oxygen to the microbes.
3. Passo 3. Compressor — faz parte de — Turbojet engine. The compressor compresses the air.
4. Passo 4. Turbojet engine — utiliza — Kerosene. Jet fuel is kerosene.
5. Passo 5. Kerosene — é feito de — Crude oil. A fraction of crude oil.
6. Passo 6. Crude oil — utiliza — Oil well. Oil is extracted from wells.

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