Answer:
Studying celestial bodies, birds, the wind, clouds, ocean currents and wave pattern
Explanation:
Studying celestial bodies, birds, the wind, clouds, ocean currents and wave pattern
I believe the movement of water is known as the ocean current.
Ans : It is bits of pottery and clay, mounds containing the remains of cites and ancient writing.
Hope It Help ^_^
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Maybe the one at the bottom