What is the principle involved in using brine solution to remove the ice piled on roads in cold regions?

Explanation

### Step-by-Step Solution:

1. **Understanding the Problem**: In cold regions, ice accumulates on roads due to low temperatures. The question asks about the principle behind using a brine solution to remove this ice.

2. **Defining Brine Solution**: A brine solution is a mixture of salt (sodium chloride) and water. When salt is dissolved in water, it creates a solution that has different properties compared to pure water.

3. **Melting Point of Ice**: Ice melts at 0 degrees Celsius. This means that at this temperature, ice transitions from solid to liquid. However, in cold regions, temperatures often drop below 0 degrees Celsius, preventing ice from melting naturally.

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