The primary source of energy for all forms of life on Earth is solar energy. The sun emits energy in the form of light and heat, which drives various processes essential for life, including photosynthesis in plants. Through photosynthesis, plants convert solar energy into chemical energy stored in organic compounds, primarily glucose. This energy then flows through food webs as organisms consume plants and each other. Additionally, solar energy influences climate, weather patterns, and ecosystems, illustrating its fundamental role in maintaining life on our planet.