Definition - What does Photosynthesis mean?
Photosynthesis is the complex process that is undergone by green plants, algae and certain kinds of bacteria, which involves the conversion of water, carbon dioxide and some types of salt into carbohydrates. Energy from the sun and chlorophyll are required for this to happen. Most forms of photosynthesis release oxygen as a byproduct of the process.
Safeopedia explains Photosynthesis
Photosynthesis is very important to the health and safety of our planet. First, it is vital to the survival of plant life. Without plant life the food chain or web would collapse and no species would have food. This is because all life, either directly or indirectly relies on plant life as the primary source of food. Secondly, without photosynthesis we would have no oxygen to breathe.