Oxygen availability

Oxygen availability refers to the presence of oxygen in the environment, which is essential for the survival of most living organisms. In the Earth's atmosphere, oxygen is produced primarily by plants through photosynthesis, where they convert sunlight, carbon dioxide, and water into oxygen and glucose. Oxygen is crucial for respiration in animals and humans, enabling energy production in our cells. Its availability can be affected by factors like air pollution, deforestation, and climate change, which can reduce the amount of oxygen produced and alter the balance of ecosystems, ultimately impacting life on Earth.