| Powierzchnia (km2) | Odpowiedź | % Poprawnych |
|---|---|---|
| 100000 | Amazonka | 98%
|
| 22200 | Nil | 98%
|
| 18000 | Wołga | 84%
|
| 31900 | Missisipi | 78%
|
| 86000 | Ganges - Brahmaputra | 75%
|
| 45000 | Lena | 62%
|
| 28500 | Niger | 53%
|
| 48000 | Eufrat - Tygrys | 42%
|
| 11000 | Zambezi | 36%
|
| 24000 | Orinoko | 35%
|
| 10000 | Amu-daria | 11%
|