Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy. Using sunlight, these organisms transform carbon dioxide and water into glucose and oxygen, which are essential for their growth and survival. This process primarily occurs in the chloroplasts of plant cells, where the pigment chlorophyll captures sunlight. The significance of photosynthesis extends beyond just plant life; it is crucial for life on Earth. The oxygen produced during photosynthesis is vital for the respiration of most living organisms. Additionally, photosynthesis plays a key role in regulating atmospheric carbon dioxide levels, contributing to the planet's climate balance.