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How might cyanobacteria have contributed to the evolution of animals?
Wiki User
∙ 9y ago
Cyanobacteria were the first organisms to produce oxygen from water and carbon dioxide. When the oxygen levels increased, an ozone layer developed, which blocked excess ultraviolet light from reaching the land. This made it possible for organisms to move onto land without being killed by UV light. Additionally, the oxygen created an atmosphere that permitted aerobic organisms to evolve, and aerobic organisms were the majority of those that ended up colonizing the land.
Wiki User
∙ 9y ago
Wiki User
∙ 9y agoCyanobacteria aided with this process mostly because they were producing oxygen billions of years ago. They continued to survive and increase the development of life because throughout the Proterozoic (2500-543 mya) the ocean's redox structure favored photoautotrophs that were able to create the process of nitrogen- fixation.
Wiki User
∙ 9y agoCyanobacteria may have contributed to the evolution of animals because they contributed to the oxygen atmosphere. They released oxygen when during photosynthesis.
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