In which category organisms of related families are placed?

Explanation

To answer the question "In which category are organisms of related families placed?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand Taxonomic Hierarchy**: The first step is to understand the taxonomic hierarchy, which is the classification system used to organize living organisms based on their similarities and differences.

2. **Identify the Levels of Classification**: The levels of classification in the taxonomic hierarchy are:
- Kingdom
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