Which is a fossil fuel?

Which is a fossil fuel?

• A. Oil
• B. Water
• C. Forests
• D. Soil

Answer: (A)

Fossil fuels are energy sources formed from ancient plants and animals that were buried and transformed by heat and pressure over millions of years. Oil fits this idea because it comes from the remains of tiny marine organisms locked in sediment, which over long ages became hydrocarbons that we extract as a liquid fuel. That long formation time makes oil a nonrenewable energy resource. Water is not a fossil fuel; it’s part of the water cycle and powers hydroelectricity by moving turbines, not by stored chemical energy from ancient life. Forests provide energy through biomass like wood, which is renewable if managed, but it comes from currently living material rather than ancient deposits. Soil isn’t a fuel at all; it’s the medium that supports plant growth and holds nutrients. So oil is the fossil fuel among the options.

Fossil fuels are energy sources formed from ancient plants and animals that were buried and transformed by heat and pressure over millions of years. Oil fits this idea because it comes from the remains of tiny marine organisms locked in sediment, which over long ages became hydrocarbons that we extract as a liquid fuel. That long formation time makes oil a nonrenewable energy resource.

Water is not a fossil fuel; it’s part of the water cycle and powers hydroelectricity by moving turbines, not by stored chemical energy from ancient life. Forests provide energy through biomass like wood, which is renewable if managed, but it comes from currently living material rather than ancient deposits. Soil isn’t a fuel at all; it’s the medium that supports plant growth and holds nutrients. So oil is the fossil fuel among the options.