Which term refers to energy sources that originated from ancient organisms and include coal, oil, and natural gas?

Which term refers to energy sources that originated from ancient organisms and include coal, oil, and natural gas?

• A. Biofuels
• B. Renewable fuels
• C. Nuclear fuels
• D. Fossil fuels

Answer: (D)

Energy sources that come from the remains of ancient organisms are fossil fuels. Coal, oil, and natural gas were formed when plants and microorganisms died long ago, were buried under sediments, and were transformed by heat and pressure over millions of years. This long, slow formation process means they are non-renewable, since we can’t replenish them on a human timescale. When burned, the chemical energy stored in these carbon-rich compounds is released as heat, powering engines, electricity, and industry. Biofuels come from living or recently living matter and are considered renewable, while nuclear fuels obtain energy from atomic reactions and aren’t derived from organic matter. Fossil fuels fit the description perfectly, encapsulating ancient biological origins and a geologic formation timeline.

Energy sources that come from the remains of ancient organisms are fossil fuels. Coal, oil, and natural gas were formed when plants and microorganisms died long ago, were buried under sediments, and were transformed by heat and pressure over millions of years. This long, slow formation process means they are non-renewable, since we can’t replenish them on a human timescale. When burned, the chemical energy stored in these carbon-rich compounds is released as heat, powering engines, electricity, and industry. Biofuels come from living or recently living matter and are considered renewable, while nuclear fuels obtain energy from atomic reactions and aren’t derived from organic matter. Fossil fuels fit the description perfectly, encapsulating ancient biological origins and a geologic formation timeline.