“The Rivet Popper hypothesis explaining the effect of species loss on man's life was proposed by

Options

A. Paul Nurse
B. Norman Myers
C. Shannon
D. Paul Ehrlich

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the Rivet Popper hypothesis and who proposed it.

2. **Identifying the Hypothesis**: The Rivet Popper hypothesis is a concept that explains the relationship between species loss and the functioning of ecosystems. It uses the analogy of an airplane held together by rivets.

3. **Explaining the Analogy**: In this analogy, the airplane represents an ecosystem, and the rivets represent different species within that ecosystem. Each rivet (species) plays a crucial role in maintaining the integrity and functionality of the airplane (ecosystem).

4. **Impact of Species Loss**: According to the hypothesis, if only a few rivets (species) are lost, the airplane (ecosystem) can still function properly. However, if a significant number of rivets (species) are lost, the airplane (ecosystem) will fail to function correctly, leading to potential collapse.

5. **Identifying the Proposer**: The Rivet Popper hypothesis was proposed by Paul and Rich. This is a key point to answer the question correctly.

6. **Evaluating the Options**: The options given were:
- A) Pauliners
- B) Norman Myers
- C) Shannon
- D) Paul and Rich

Based on the information, the correct answer is D) Paul and Rich.

7. **Final Answer**: The Rivet Popper hypothesis explaining the effect of species loss on man's life was proposed by **Paul and Rich**.