Which term describes the energy source that has finite supply, such as coal?

• A. Renewable Energy
• B. Microfinance
• C. Nonrenewable Energy
• D. PPP

Answer: (C)

Finite-energy sources are nonrenewable because they cannot be replaced quickly enough to meet ongoing demand. Coal is a prime example: it formed over millions of years from ancient plant material and, once burned for fuel, isn’t regenerated on human timescales. Fossil fuels like coal, oil, and natural gas make up nonrenewable energy, which gradually diminishes as we use it. This stands in contrast to renewable energy, which comes from sources that naturally replenish on human timescales, such as the sun, wind, water, and geothermal heat. The other terms don’t describe energy sources with a limited, non-replenishing supply: renewable energy refers to replenishable sources, microfinance is a financial service, and PPP (public-private partnership) is a collaboration model, not an energy category.