| query | B_______ are very small organisms. Some bacteria can cause disease.Bacteria are very small organisms. Some bacteria can cause disease. Chlorine is added to kill bacteria. |
|---|---|
| word | bacteria |
| full-definition | noun Bacteria are very small organisms. Some bacteria can cause disease. Chlorine is added to kill bacteria. |
| cefr-level | B2 |
Tags: oxford5k::cefr-level:b2
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