what can be used to navigate?
constellations sponges aquatic organisms knowledge of water lamphreys thermometers ocean floor feedback mechanisms
A B C D E F G H
And every star there ever was is in a constellation.
knowledge of constellations can be used to navigate
what can be used to navigate? (A) constellations (B) sponges (C) aquatic organisms (D) knowledge of water (E) lamphreys (F) thermometers (G) ocean floor (H) feedback mechanisms