Are The Oxgen Cycle?
Are The Oxgen Cycle? Photosynthesis (land) 16,500 Surface reaction of O3 12 Total losses ~30,000 What is the oxygen cycle called? In the biosphere the main cycles are respiration and photosynthesis. Respiration is when animals and humans breathe consuming oxygen to be used in metabolic process and exhaling carbon dioxide. Photosynthesis is the reverse of