Final answer:
Photosynthesis is the process through which plants release oxygen into the air. This process converts carbon dioxide and water into glucose and oxygen, using the energy from light, and replenishes the atmospheric oxygen.
Step-by-step explanation:
The name of the process through which plants release oxygen into the air is called photosynthesis. During photosynthesis, green plants convert carbon dioxide and water into glucose and oxygen using the energy of light. This remarkable process not only provides the food that plants need to survive but also produces the oxygen that is essential for animal and human life. The overall reaction for photosynthesis can be summarized as 6CO₂(g) + 6H₂O(l) → C₆H₁₂O₆(s) + 6O₂(g). It is through photosynthesis that the oxygen used by animals and humans to sustain life is replenished in the atmosphere.