The biodiversity increases when one moves from the pioneer to the climax stage. What could be the explanation? 

Explanation

### Step-by-Step Solution:

1. **Understanding Ecological Succession**:
- Ecological succession refers to the gradual process of change and replacement in the species composition of an ecological community over time. It starts with a pioneer community and progresses to a climax community.

2. **Defining Pioneer and Climax Communities**:
- The pioneer community consists of the first organisms that colonize a barren or disturbed area. These organisms are typically hardy species that can survive in harsh conditions.
- The climax community is the final, stable community that establishes itself after a series of ecological changes. It represents a state of equilibrium with the environment.
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