The main source of energy for the Earth is the Sun. Solar energy drives most processes on the planet, including weather patterns, plant photosynthesis, and the water cycle. The Sun emits energy in the form of sunlight, which is captured by plants to produce food through photosynthesis, forming the base of the food chain. Additionally, solar energy affects climate and temperature patterns, influencing ecosystems and habitats. Renewable energy technologies harness this sunlight, converting it into electricity, heating, and other forms of usable energy, making the Sun a fundamental component of life on Earth.