Is an aquarium a complete ecosystem? 

Explanation

### Step-by-Step Solution:

1. **Definition of Ecosystem**: An ecosystem is defined as a community of living organisms (biotic components) interacting with their physical environment (abiotic components).

2. **Components of an Ecosystem**: A complete ecosystem must have both biotic (living organisms like plants, animals, and microorganisms) and abiotic (non-living elements like water, air, soil, and temperature) components.

3. **Aquarium as an Ecosystem**: An aquarium is a man-made or artificial ecosystem that contains both biotic and abiotic components.

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