How are ecosystems classified based upon their formation? Explain.

Explanation

### Step-by-Step Solution:

1. **Understanding Ecosystems**: An ecosystem is a community of living organisms interacting with their environment. It includes both biotic (living) and abiotic (non-living) components.

2. **Classification Based on Formation**: Ecosystems can be classified into two main categories based on their formation:
- **Natural Ecosystems**
- **Artificial Ecosystems**

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