Final answer:
Photosynthesis is the process by which plants use sunlight, carbon dioxide, and water to produce glucose and oxygen. The purpose of photosynthesis is to produce glucose for energy.
Step-by-step explanation:
Photosynthesis is the process by which plants use sunlight, carbon dioxide, and water to produce glucose and oxygen. Glucose is used as a source of energy for the plant, while oxygen is released into the atmosphere as a waste product. The overall purpose of photosynthesis is to produce glucose for energy.