Artificial ecosystems are characterised by

Options

A. High productivity
B. High diversity
C. Complex food chains
D. more cycling of nutrients

Answer

**Step-by-Step Solution:**

1. **Understanding Ecosystems**: Begin by defining what an ecosystem is. An ecosystem consists of living organisms interacting with each other and their physical environment.

2. **Types of Ecosystems**: Recognize that there are two main types of ecosystems: natural ecosystems and artificial ecosystems.

3. **Examples of Natural Ecosystems**: Identify examples of natural ecosystems, such as forests, ponds, oceans, and deserts. These ecosystems function without human intervention.

4. **Examples of Artificial Ecosystems**: Identify examples of artificial ecosystems, such as crop fields, parks, and aquariums. These ecosystems require human management and intervention.

5. **Human Intervention**: Understand the role of human intervention in artificial ecosystems. Humans actively manage these ecosystems by removing weeds, applying fertilizers, monitoring water availability, and ensuring the health of the organisms within.

6. **Productivity in Ecosystems**: Discuss how human intervention affects productivity. In artificial ecosystems, productivity is generally higher due to the continuous care and management provided by humans. In contrast, natural ecosystems have lower productivity because they do not receive such interventions.

7. **Conclusion**: Based on the above points, conclude that artificial ecosystems are characterized by high productivity due to the significant human involvement in their management.

**Final Answer**: Artificial ecosystems are characterized by **high productivity**.

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