Please help me - Why this image rejected for quality issue? What needs to be fixed?

Bad English and at least one misspelled word.

Some spelling and grammatical errors, according to Gemini:

• Spelling Error: Under the heading "Non-Invasive Colonization" (bottom left), the word "infaction" is misspelled. It should be "infection".

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• Grammar Error: Under the heading "Fine Scale and Wrinkled Surface" (bottom right of the middle section), the sentence reads, "The bacterial overgrowth causes the affected skin becomes reddish-brown..." It should be corrected to "...causes the affected skin to become reddish-brown...".

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• Minor Phrasing Suggestion: Under "A Gram-Positive Diphtheroid Bacillus" (middle left), the phrasing "A small, pleomorphic, non-spore-forming, and facultatively anaerobic bacterium, typically exists as a harmless commensal" is slightly awkward. Changing it to "...anaerobic bacterium that typically exists..." would improve the flow.