What is another word for fossil oil?
Pronunciation: [fˈɒsə͡l ˈɔ͡ɪl] (IPA) 
Fossil oil, also known as petroleum, can be defined as a naturally occurring, flammable liquid found beneath the Earth's surface. Synonyms for fossil oil include crude oil, petroleum oil, and black gold. Crude oil is the unrefined form of petroleum, while petroleum oil is the refined version used as fuel. Black gold refers to the economic value of the oil and its contribution to the global economy. Oil is a non-renewable resource and has been the subject of controversy due to its impact on the environment. Alternative energy sources such as solar and wind power have been developed to reduce our dependence on fossil oil.
