Oxygen was added to Earth's atmosphere through the process of photosynthesis by early photosynthetic organisms like cyanobacteria. These organisms released oxygen as a byproduct, which accumulated over millions of years and eventually led to the oxygen-rich atmosphere we have today.
The primary sources of oxygen in Earth's early atmosphere were likely photosynthetic organisms like cyanobacteria, which began producing oxygen as a byproduct of photosynthesis. Over time, this oxygen built up in the atmosphere, leading to the development of oxygen-rich conditions on Earth.
Plants, trees, and grass put oxygen into the air.
Cyanobacteria added oxygen to the atmosphere through the process of photosynthesis, fundamentally changing the composition of Earth's atmosphere and enabling the evolution of aerobic organisms.
There are smallamount of volcanoes. They emit so2 and co2 gases.
The biggest contributer was and is algae.
oxygen is added to the atmosphere when plants take in carbon dioxide during cellular respiration
Fire Also PollutionAlso respiration of oxygen breathing animals.
Oxygen is primarily added to the air through the process of photosynthesis in plants and algae. During photosynthesis, these organisms use sunlight to convert carbon dioxide and water into oxygen and glucose. This process helps maintain the balance of oxygen in the atmosphere.
Photosynthetic bacteria produced oxygen, and as they continued to colonize the earth they produced more oxygen. Eventually all the oxygen sinks became saturated, and this resulted in the Great Oxygenation Event (GOE). Aerobic organisms would late evolve and utilize the free oxygen.
None: there is no metal involved.
Oxygen is one of the products of photosynthesis and is the gas that rose in abundance in the atmosphere due to the process of photosynthesis.