| Answer | Crossword Clue |
|---|---|
| worlds | particular part of the earth |
| world | particular part of the earth |
| astrocompass | a navigational instrument for giving directional bearings from the centre of the earth to a particular star |
| astrocompasses | ASTROCOMPASS, a navigational instrument for giving directional bearings from the centre of the earth to a particular star |
| palaeocurrent | a current that existed at a particular stage in the geological development of the earth, as evinced by sedimentary rock formations |
| palaeocurrents | PALAEOCURRENT, a current that existed at a particular stage in the geological development of the earth, as evinced by sedimentary rock formations |
