What do we learn from identification of individuals and populations?

Explanation

### Step-by-Step Solution

1. **Understanding Identification**: Identification of individuals and populations is crucial in biology and ecology, particularly in areas with high diversity. It helps us understand the variations within a species and among different species.

2. **Need for Identification**: Identification becomes necessary when there is a significant amount of diversity in a particular area. For example, in countries like India and the USA, the diversity is vast, which necessitates a systematic approach to identify individuals and populations.

3. **Criteria for Identification**: We can identify individuals and populations based on various criteria:
- **Geographical Location**: Where individuals or populations are found, such as their native place.
...