What are used to navigate oceans?
cnidarians lamphreys ocean temperatures magnets smoke signals spacecraft laptops calibrated
A B C D E F G H
Magnets are used in compasses.
magnets are used to navigate oceans
What are used to navigate oceans? (A) cnidarians (B) lamphreys (C) ocean temperatures (D) magnets (E) smoke signals (F) spacecraft (G) laptops (H) calibrated