Non-renewable energy refers to energy sources that cannot be replenished in a short time frame. These include fossil fuels like coal, oil, and natural gas, which are formed from the remains of ancient plants and animals over millions of years. As these resources are consumed, they diminish, leading to concerns about sustainability and environmental impact. The extraction and use of non-renewable energy contribute significantly to greenhouse gas emissions, which are a major driver of climate change. Transitioning to renewable energy sources, such as solar and wind, is essential for reducing our carbon footprint and ensuring a sustainable future.