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Bacteria - Wikipedia
Bacteria | Cell, Evolution, & Classification | Britannica
Bacteria - Definition, Shapes, Characteristics, Types & Examples
Bacteria: Definition, Types, Benefits, Risks & Examples - Cleveland …
Bacteria - National Geographic Society
Bacteria: Types, characteristics, where they live, hazards, and more
Bacteria | What is microbiology? | Microbiology Society
Bacteria Overview | Ask A Biologist
Bacteria and their types | Britannica
Bacteria (video) | Prokaryote structure | Khan Academy