Name an example of a renewable energy source.

Solar energy is classified as a renewable energy source because it is derived from the sun, which is a perpetual resource. Unlike fossil fuels such as natural gas and coal, which are finite and can deplete over time, solar energy is constantly replenished. It can be harnessed continuously as long as the sun shines, making it a sustainable option for energy generation.

Harnessing solar energy can take various forms, such as photovoltaic cells that convert sunlight directly into electricity or solar thermal systems that utilize sunlight to produce heat. This versatility allows solar energy to be applied in numerous settings, from residential rooftops to large-scale solar farms.

In contrast, natural gas and coal are fossil fuels that will eventually run out as they require millions of years to form. Nuclear energy, while efficient and low in carbon emissions, relies on uranium, which is also a finite resource. Therefore, solar energy stands out as a key renewable source, contributing significantly to efforts aimed at reducing carbon footprints and promoting sustainability.