Sunlight is the natural light that comes from the Sun, providing essential energy for life on Earth. It is composed of various wavelengths, including visible light, ultraviolet, and infrared radiation, which play crucial roles in processes like photosynthesis in plants and regulating the Earth's climate. In addition to its biological importance, sunlight also influences human health and well-being. Exposure to sunlight helps the body produce vitamin D, which is vital for bone health. However, too much exposure can lead to skin damage, making it important to balance sun exposure with protection.