Figure 1 shows how the density of Venus's atmosphere changes with altitude above the surface.
| Altitude above surface in km | Atmospheric density in kg/m3\text{kg/m}^3kg/m3 |
|---|---|
| 0 | 65.0 |
| 10 | 38.0 |
| 20 | 20.0 |
| 30 | 9.5 |
| 40 | 4.0 |
Describe how the atmospheric density of Venus changes with altitude above the surface.
Use data from Figure 1 to support your answer.