What was the population density of human population in India according to 2001 and 2011 census?

Explanation

To find the population density of the human population in India according to the 2001 and 2011 census, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Population Density**:
- Population density refers to the number of individuals of a species per unit area. In this context, it is the number of people living per square kilometer in a specific geographical area.

2. **Identify Census Years**:
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