Why is it that no population can live alone in nature?

Explanation

### Step-by-Step Solution:

1. **Understanding Ecosystems**: Begin by recognizing that ecosystems are made up of various populations of different species that interact with each other. No single species can exist in isolation because they are all part of a larger community.

2. **Dependency on Other Species**: Every species, including plants, relies on other species for survival. For instance, plants, although they produce their own food through photosynthesis, require other organisms for essential processes.

3. **Role of Microorganisms**: Microorganisms play a crucial role in the ecosystem. They help decompose organic matter, which enriches the soil with inorganic nutrients. These nutrients are vital for plant growth and absorption.

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