<span>A) Ultraviolet light stopped the replication process of bacteria.
Stopped or slowed this process, hint the sterilization.
The question doesn't directly ask this but, after a while a lot of bacteria become immune to treatment especially antibiotics. </span>
The answer to this is fragmentation budding and last of all producing spore hope this helps all of you
Which process is the most responsible for the increase in early Earth's atmospheric oxygen levels?
Photosynthesis
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