What is the ecological principle behind the biological control method of managing pests?

Explanation

### Step-by-Step Solution:

1. **Understanding Pests**: The first step is to identify what pests are. Pests are organisms, such as insects and worms, that can harm crops and reduce agricultural productivity.

2. **Biological Control Method**: This method involves using living organisms to control pest populations. It is an alternative to chemical pesticides.

3. **Ecological Principle of Predation**: The primary ecological principle behind biological control is predation. Predation is an interaction where one organism (the predator) kills and consumes another organism (the prey).

...