Natural sources refer to materials and energy that come from the environment without human intervention. These include resources like water, minerals, forests, and fossil fuels. They are essential for sustaining life and supporting various ecosystems. Natural sources can be renewable, such as solar energy and wind, or non-renewable, like coal and oil. These resources play a crucial role in human activities, providing the raw materials needed for construction, energy production, and agriculture. Sustainable management of natural sources is vital to ensure their availability for future generations while minimizing environmental impact.