Learn all about photosynthesis with new, precise, yet easy-to-understand, definitions and explanations. What do plants need to make their own food? What is the process through which plants make their own food? And what is produced by plants during photosynthesis? The answers to all of these questions are covered in depth with detailed graphics, diagrams and exciting video. On-screen, multiple-choice reviews at the end of each segment reinforce important concepts and make learning fun.