Answer:
Photosynthesis is the process in which light energy is converted to chemical energy in the form of sugars. In a process driven by light energy, glucose molecules (or other sugars) are constructed from water and carbon dioxide, and oxygen is released as a byproduct. Photosynthesis is important to living organisms because it is the number one source of oxygen in the atmosphere. Plants help humans survive by giving out carbon dioxide to oxygen through this proccess that helps us to breathe.