In the rivet popper hypothesis. The word rivet refers to

Options

A. Community
B. Ecosystem
C. Species
D. Biomass

Answer

To answer the question regarding the Rivet Popper Hypothesis, let's break it down step by step:

### Step-by-Step Solution:

1. **Understanding the Rivet Popper Hypothesis**:
- The Rivet Popper Hypothesis was proposed by Paul Ehrlich. It emphasizes the significance of species richness (or diversity) in maintaining the stability and functionality of ecosystems.

2. **Analogy of the Aeroplane**:
- In this hypothesis, an ecosystem is compared to an aeroplane. The aeroplane is made up of many small parts called rivets, which hold the structure together.

3. **Role of Rivets**:
- Rivets in this analogy represent the various species within an ecosystem. Just as rivets are crucial for the structural integrity of an aeroplane, species are essential for the health and balance of an ecosystem.

4. **Impact of Species Loss**:
- The hypothesis suggests that if species (rivets) are lost (popped), the ecosystem (aeroplane) may initially function well. However, as more species are lost, the ecosystem becomes increasingly unstable and may eventually collapse.

5. **Identifying the Correct Answer**:
- The question asks what the term "rivet" refers to in the context of the Rivet Popper Hypothesis. Based on the explanation, "rivet" refers to species. Therefore, the correct answer is:
- **C. Species**

### Final Answer:
In the Rivet Popper Hypothesis, the word "rivet" refers to **species**.

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