Largest of all aquatic ecosystem is

Options

A. 1)Marine water ecosystem
B. 2)Estuarine ecosystem
C. 3)Fresh water ecosystem
D. 4)Lake ecosystem

Answer

**Step-by-Step Solution:**

1. **Understanding Ecosystems**: An ecosystem consists of living organisms (biotic components) and non-living elements (abiotic components) interacting in a specific environment.

2. **Types of Aquatic Ecosystems**: Aquatic ecosystems are primarily divided into two main categories: marine ecosystems and freshwater ecosystems.

3. **Marine Ecosystem**: The marine ecosystem includes oceans, seas, and other saltwater bodies. It covers approximately 70% of the Earth's surface, making it the largest aquatic ecosystem.

4. **Freshwater Ecosystem**: In contrast, freshwater ecosystems, which include rivers, lakes, and ponds, cover less than 1% of the Earth's surface.

5. **Evaluating the Options**: The question provides four options:
- A) Marine water ecosystem
- B) Estuarine ecosystem
- C) Freshwater ecosystem
- D) Lake

6. **Identifying the Largest**: Among these options, the marine water ecosystem is the largest, as it encompasses a vast area of the Earth's surface compared to the other options.

7. **Conclusion**: Therefore, the correct answer to the question "Largest of all aquatic ecosystems is" is the **marine water ecosystem**.

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