| Query | User |
|---|---|
| danube water treaties | entered by user 1594201 |
| danube water treaties | entered by user ditto |
| energy pyramids for the sunlight part of ocean | entered by user 18477103 |
| salinity of typical sea water | entered by user 22692359 |
| slovakia water treaties | entered by user 1594201 |
| trophic levels penguins | entered by user 15102431 |
| world's largest deltas | entered by user 3097607 |
| world's largest deltas | entered by user ditto |