Photosynthesis is the process by which green plants, algae, and some bacteria make their own food using sunlight. During this process, plants take in carbon dioxide from the air and water from the soil. With the help of sunlight and a green pigment called chlorophyll, they produce glucose, a type of sugar, and release oxygen as a byproduct.
Photosynthesis is essential for life on Earth because it provides food for plants and animals, including humans. It also produces the oxygen that people and animals need to breathe. Understanding photosynthesis helps explain how energy flows through ecosystems and why plants are so important for the environment. Shutdown123