Correct option is C
Coal is a
non-renewable energy source because it is a fossil fuel formed from the remains of plants and animals over millions of years. Once coal is extracted and burned, it cannot be replaced within a human timescale. Burning coal releases energy, but it also emits pollutants like carbon dioxide (CO₂), contributing to global warming. It is finite, and its excessive use leads to depletion.
Renewable Energy Sources:
Fuel cells: Although they are devices that convert chemical energy directly into electrical energy, the fuel used in fuel cells can often come from renewable sources like hydrogen, which can be produced using renewable energy (solar, wind). Hence, fuel cells are generally seen as part of renewable energy technology.
Wind power: Wind energy is
renewable because it harnesses the natural wind currents to produce electricity using wind turbines. Wind is a naturally occurring and inexhaustible resource.
Wave power: Wave energy is also
renewable as it captures the energy from ocean waves to generate electricity. Like wind, waves are a continuous and replenishing natural resource.
