Step-by-step explanation:
Cyanobacteria are prokaryotes necessary for the production of atmospheric oxygen since they could carry out photosynthesis. On the other hand, the processes of physical and chemical weathering and the action of living beings contribute to the formation of a very important element for the development of life: the soil. In fact, the soil is the result of the disintegration of the parent rock by the action of atmospheric agents and its subsequent colonization by living beings (bacteria, algae, fungi, and lichens and later by plants).
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Answer: