A detailed, hand-drawn whiteboard explanation of the process of photosynthesis, designed for a high school biology class. The diagram should use simple icons (a sun, a plant, water droplets, CO2/O2 molecules) and clear, handwritten labels. Arrows should clearly show the flow of energy and matter. The style should be clean and easy to follow, mimicking a real teacher’s whiteboard drawing, showcasing strong knowledge-based visual reasoning and educational application. –ar 16:9