Oxygen which is vital for life is a product of photosynthesis and come...
The unusually high concentration of oxygen has on Earth is the result of the oxygen cycle. This biogeochemical cycle describes the movement of oxygen within and between its three main reservoirs on Earth: the atmosphere, the biosphere, and the lithosphere. The main driving factor of the oxygen cycle is photosynthesis, which is responsible for modern Earth's atmosphere. Photosynthesis releases oxygen into the atmosphere, while respiration and decay remove it from the atmosphere.
Oxygen which is vital for life is a product of photosynthesis and come...
The splitting of water molecules during the light-dependent reactions of photosynthesis. The oxygen atoms released during this process combine to form O2, which is then released into the atmosphere as a waste product of photosynthesis. This process is essential for the survival of all oxygen-dependent life forms, including plants and animals. Without photosynthesis, the amount of oxygen in the atmosphere would gradually decrease, making it difficult for animals to breathe and survive.