In the mid-twentieth century and corroborated ever since, researchers dredging the seafloor could not find any materials older than 180 million years.
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What do you understand by seafloor ?</h3>
The surface of an ocean or sea: seafloor According to this theory, the Earth's crust is divided into a number of enormous plates that together form the continents and ocean floors and are supported by a warm, plastic "mantle" beneath the surface. Mr. Walter Sullivan
Deposits of common minerals like copper, zinc, nickel, gold, silver, and phosphorus can be found on the seafloor. These deposits are nodules on silt from the abyssal plain that are typically 3 to 10 centimeters (1 to 4 inches) in diameter and appear as crusts on volcanic and other rocks.
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Answer:
One of the best-preserved records of these events is in the bottom of the Grand Canyon—in a package of sedimentary strata known as the Tonto Group.
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compare the size of land forms and estimate distances,
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my explaination is my answer
hope this helps
(p.s:please mark me as brainlyest)
Explanation:
Flash floods are dangrous because
they have the destructive power of a normal flood combined with raging water, in addition to being unpredictable. Each year in the U.S., floods kill more people than hurricanes, tornadoes or lightning.
*kicks down the door*BLITZKRIEG!!!!
chur answer would be B
