Classify the following as slow and fast changes.
Occurrence of day and night

Explanation

To classify the occurrence of day and night as a slow or fast change, we can follow these steps:

### Step 1: Understand the Concept of Changes
Changes can be classified into two categories: slow changes and fast changes.

### Step 2: Define Slow and Fast Changes
- **Slow Changes**: These are changes that take a longer time to occur, typically hours, days, weeks, or even years.
- **Fast Changes**: These are changes that happen quickly, often in seconds or minutes.
...