An advantage of using fossil fuels is their high energy density, making them a major source of energy in industrialized nations. Fossil fuels, such as coal, oil, and natural gas, can be easily extracted and are relatively inexpensive to produce. This energy source has powered economic growth and technological advancements for over a century. Additionally, existing infrastructure for extraction, refining, and distribution of fossil fuels facilitates their widespread use. However, reliance on fossil fuels contributes to environmental challenges, such as climate change, prompting a shift towards renewable energy sources.