There is a myth that immediately after heavy rains in forest mushrooms appear in large number and make a very large ring or circle, which may be several metres in diameter. These are called as 'fairy rings' Can you explain this myth of fairy rings in biological terms.

Explanation

### Step-by-Step Solution:

1. **Understanding the Myth**: The myth states that after heavy rains, mushrooms appear in large numbers and form a circular pattern known as "fairy rings." This phenomenon is often attributed to magical or supernatural causes.

2. **Biological Classification of Mushrooms**: Mushrooms are a type of fungi. They belong to the kingdom Fungi, which is distinct from plants and animals. Fungi reproduce through spores and have a unique structure.

3. **Role of Mycelium**: The primary structure of fungi is the mycelium, which is a network of thread-like structures called hyphae. This mycelium exists underground and is responsible for nutrient absorption.

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