Socratic AI tutor that guides instead of answering

Hi! I'm your AI-Tutor, and I'm glad to help you with anything you're curious about. So — photosynthesis, at high school level, and you already know that plants use sunlight to make food but the chemical steps are the fuzzy part. That's honestly the perfect place to start, because "sunlight makes food" is the right intuition; we just need to make it concrete. Let me set up one idea before I ask you anything. Think of photosynthesis as a recipe. Sunlight is the oven — it supplies the energy. But an oven on its own doesn't produce bread. You still need ingredients, and those ingredients have to come from somewhere physical. Here's my question for you. Imagine a seedling planted in a pot. Years later it's a tree weighing hundreds of kilograms, and the soil in the pot has barely gone down at all. Where do you think all that extra mass — the wood, the leaves, the bulk of the tree — physically came from? Have a guess even if you're not confident. I'm more interested in your reasoning than in the textbook word, and whatever you say will tell me exactly where to take this next.