How Did Cyanobacteria Change Life On Earth at Life

How Did Cyanobacteria Change Life On Earth. They turned into a gas. As a whole, the number of anaerobic organisms dwindled to the brink of extinction.

There was little free o 2 until large quantities of cyanobacteria released it into the atmosphere 2.3 billion years ago. They changed the atmosphere profoundly and changed th course of biological evolution. Bacteria develop primitive forms of photosynthesis which at first did not produce oxygen.

PPT The Earth’s Atmosphere and Climate PowerPoint

Their oxygenic photosynthesis led to the gradual conversion of the earth‟s atmosphere from an anaerobic to an aerobic one. Bacteria develop primitive forms of photosynthesis which at first did not produce oxygen. The oxygenic phototrophic cyanobacteria were the first step in changing the atmosphere of ancient earth into one that could support the wide variety of organisms that evolved throughout history. How did cyanobacteria change life on earth?