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(Solved): b. How did the photosynthesis process allow for the evolution of other, non-photosynthetic organisms? (5 points)...


a.     How did the photosynthesis process allow for the evolution of other, non-photosynthetic organisms? (5 points)



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Photosynthetic cyanobacteria led to the production of oxygen, which was a new element in the environment, during photosynthesis. The availability of oxygen led to the emergence of new species (non-photosynthetic organisms). Mass extinctions followed, and any microbe that could not survive in the presence of oxygen died off. As photosynthetic materials increased in number, more oxygen was released in the atmosphere. Oxygen’s availability in the atmosphere enabled more non-photosynthetic organisms to emerge. 

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