The evolution of organisms that use oxygen in their

Last updated: 2/22/2023

The evolution of organisms that use oxygen in their respiration was possible only because of the action of a group of bacteria that produced oxygen and changed the Earth s atmosphere from an anoxic one to one rich in oxygen That group of bacteria was 1 actinobacteria 2 Staphylococcus 3 proteobacteria 4 spirochaetes 5