Explain Photosynthesis Create a drawing and use the following keywords to explain photosynthesis: Carbon Dioxide, Oxygen, Glucose, Water, Chlorophyll, Roots, Leaves and Sun. 1. Tap the add button. 2. Use the drawing tool to sketch the process of photosynthesis. Label your drawing and include a title and related keywords. You may use the drawing as a resource when recording your explanation. 3. Using the record button, in your own words, explain photosynthesis. 4. Tap the check to add to your portfolio.