Mention the taxonomy of bacteria.
Bacteria play both useful and harmful role. Justify.

Explanation

### Step-by-Step Solution:

1. **Understanding Taxonomy of Bacteria:**
- Bacteria are classified as prokaryotic organisms, meaning they lack a defined nucleus and membrane-bound organelles.
- They belong to the kingdom Monera, which includes all prokaryotic life forms.

2. **Classification Levels:**
- The taxonomy of bacteria can be broken down into several hierarchical levels:
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