What are the advantages of rain water harvesting?

Explanation

### Step-by-Step Solution:

1. **Definition of Rainwater Harvesting**:
- Rainwater harvesting is the practice of collecting and storing rainwater for future use. This can be done through various methods such as rooftop collection, surface runoff collection, and storage in tanks or reservoirs.

2. **Addressing Water Scarcity**:
- With the increasing population and urbanization, the demand for water is rising. Rainwater harvesting helps to alleviate water scarcity by providing an additional source of water.

...