Which of the following is an example of a fossil fuel?

• A. Solar energy
• B. Natural gas
• C. Wind energy
• D. Hydroelectric power

Answer: (B)

Natural gas is a fossil fuel, which is formed from the remains of ancient plants and animals that have been buried and subjected to heat and pressure over millions of years. Fossil fuels, which also include coal and oil, are important sources of energy used for electricity generation, heating, and powering vehicles.

In contrast, solar energy, wind energy, and hydroelectric power are renewable energy sources. They do not rely on the combustion of natural resources and have a lower environmental impact, as they harness natural processes such as sunlight, wind, and flowing water. This distinction is key in understanding energy types and their implications for sustainability and environmental conservation.