Petroleum

1. Composition

1.1. Hydrocarbons

1.1.1. Charger

1.1.2. Spare Battery

1.2. Organic compounds

1.2.1. Extra Batteries

2. Oil transportation

2.1. Pipelines

2.2. Oil transport vessels

3. Exploitation of oil

3.1. Extraction of oil

4. Petroleum derivatives

4.1. Gasoline

4.2. Plastics

4.3. Asphalt