What is the ecological principle behind the biological control method of managing with pest insects?

Explanation

### Step-by-Step Text Solution:

1. **Understanding Biological Control**: Biological control is a method used to manage pest populations by utilizing natural predators or parasites. This approach aims to reduce pest numbers without the use of synthetic chemicals.

2. **Key Concept - Predation**: The ecological principle behind biological control is based on the concept of predation. Predation involves one organism (the predator) feeding on another organism (the prey).

3. **Roles in Predation**:
- **Predator**: The organism that hunts and consumes another organism.
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