Answer and Explanation:
About two-thirds of the Earth's surface lies beneath the oceans. The depths of the open ocean were mostly a matter of speculation before the 19th century. Most people thought ocean floor was flat and featureless. In the early 16th century, a few navigators found that the open ocean can differ considerably in depth by taking soundings with hand lines, which shows that the ocean floor was not as flat as it believed.
At the beginning of the 1950s, scientists used magnetic instruments adapted from airborne devices to recognize odd magnetic variations across the ocean developed during World War II to detect submarines. They found that the iron-rich and volcanic rock make up the ocean floor-- contains a strongly magnetic mineral and can distort compass readings. In the early 18th century, this distortion was recognized by Icelandic mariners. Magnetite gives measurable magnetic properties; these magnetic variations help to study the deep ocean floor.
Answer:
for examples so they have data
True. The Yangtze River is indeed the world's third-largest river and it is used extensively as a trade avenue for many generations in China. It has a big influence in China's culture, economy, and history.
In Asia this river stands as the largest river stretching at 6,300 kilometers that discharges the largest volume of water to the ocean.
Answer:
The Han Chinese, Hanzu, or Han people are an East Asian ethnic group and nation, historically native to the Yellow River Basin region of modern China.
Explanation:
