Name two methods that can be used to change the overall density of an object.

Explanation

To answer the question about the two methods that can be used to change the overall density of an object, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Density**:
Density is defined as the mass of an object divided by its volume. The formula for density (ρ) is:
\[
\text{Density} (\rho) = \frac{\text{Mass} (m)}{\text{Volume} (V)}
...