What is the role of carbon dioxide in photosynthesis and how does it contribute to the process?

Carbon dioxide plays a crucial role in photosynthesis by being one of the key raw materials needed for the process. During photosynthesis, plants take in carbon dioxide from the air and use it along with water and sunlight to produce glucose (sugar) and oxygen. This process is essential for plants to make their own food and release oxygen into the atmosphere, which is vital for all living organisms on Earth.