Sonar uses sound to detect objects underwater. As well as using sonar, Ballard searched for the Titanic's trail of debris.
Explanation:
Climate change refers to long-term change in weather and temperatures.
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Nelson Mandela was a guy who tryed to give black people rights. Nelson Mandela also was part of the ANC political party and had a t part on the movement to end and cut the Aparth and would stand up for hat he belvided in but got put in prision.
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The time between 1467 and 1568 is known as the period of the Warring States because it is the time period when the Daimyos took the power from the Emperor. Rivals often fought over territory.
Free speech and common good.
hope that this helped you hon :)
