According to many ecologists the entire biosphere is regarded as

Options

A. Local ecosystem
B. Global ecosystem
C. Universal ecosystem
D. Community ecosystem

Answer

**Step-by-Step Solution:**

1. **Understanding Ecosystems**: Begin by recognizing that an ecosystem consists of living (biotic) and non-living (abiotic) components that interact with each other. This includes plants, animals, microorganisms, and environmental factors like soil, water, and air.

2. **Defining the Biosphere**: The biosphere refers to the totality of living organisms on Earth, including the areas they inhabit. It encompasses all ecosystems and the life-supporting systems that sustain them, such as the lithosphere (land), hydrosphere (water), and atmosphere (air).

3. **Identifying Types of Ecosystems**: The question provides four options: local ecosystem, global ecosystem, universal ecosystem, and community ecosystem. It is essential to understand the scope of each term:
- **Local Ecosystem**: Refers to a specific, smaller area where organisms interact.
- **Global Ecosystem**: Encompasses the entire biosphere and all ecosystems on Earth.
- **Universal Ecosystem**: This term is not commonly used in ecology.
- **Community Ecosystem**: Refers to a specific community of organisms interacting within a particular area.

4. **Conclusion**: Since the biosphere includes all living things and their interactions on a global scale, it is best described as a **global ecosystem**. Therefore, the correct answer to the question is that the entire biosphere is regarded as a global ecosystem.

**Final Answer**: The entire biosphere is regarded as a **global ecosystem**.

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