Sustainable power sources are energy options that can be replenished naturally and have minimal impact on the environment. Examples include solar energy, which harnesses sunlight using panels, and wind energy, generated by turbines that convert wind movement into electricity. These sources help reduce reliance on fossil fuels, which contribute to pollution and climate change. Another important sustainable power source is hydropower, which uses flowing water to produce energy. Additionally, geothermal energy taps into the Earth's internal heat, while biomass involves using organic materials for fuel. Together, these sources promote a cleaner, more sustainable energy future.