Discover how autotrophs like plants, algae, and bacteria make their own food through photosynthesis and chemosynthesis. Learn about photoautotrophs, chemoautotrophs, their ecological importance as oxygen producers and food chain foundations, key examples, efficiency comparisons, human applications, and future technologies inspired by nature's self-sufficient organisms.

Complete guide to photosynthesis: Understand light-dependent reactions, Calvin cycle, factors affecting plant growth, debunked myths, and why this process sustains life on Earth. Practical insights for gardeners.