State for each of the following whether it is due to evaporation or condensation
Fog appearing on a cold winter morning.

Explanation

To determine whether the fog appearing on a cold winter morning is due to evaporation or condensation, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Fog**:
- Fog is a collection of tiny water droplets suspended in the air. It occurs when the air is saturated with moisture.

2. **Temperature and Humidity**:
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