Five Relationships

1. **Cause and Effect**: One event leads to another. For example, rain causes the ground to be wet. 2. **Correlation**: Two things occur together but are not directly linked. For instance, ice cream sales and drowning incidents may rise simultaneously in summer, but one does not cause the other. 3. **Part-Whole**: Individual elements contribute to a larger system. For example, the wheels, engine, and chassis are parts of a car. 4. **Hierarchy**: Some groups are organized by levels of authority. In a company, the CEO is at the top, followed by managers and employees. 5. **Interdependence**: Entities rely on each other. Ecosystems illustrate this, as plants provide oxygen for animals, which in turn produce carbon dioxide for plants.