The main difference between renewable and nonrenewable resources lies in their availability and sustainability. Renewable resources, such as solar, wind, and geothermal energy, can be replenished naturally and are considered sustainable over time. In contrast, nonrenewable resources, like fossil fuels and minerals, exist in finite amounts and are depleted with use. The reliance on nonrenewable resources contributes to environmental challenges, including climate change and resource depletion. Transitioning to renewable resources is critical for achieving a more sustainable energy future and minimizing ecological impacts.