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The author’s explanation of how deep events occur would be most weakened if which of the following were discovered to be true?(A) Deep events are far less common than shallow events.(B) Deep events occur in places other than where crustal plates meet.(C) Mantle rock is more ductile at a depth of several hundred kilometers than it is at 50 kilometers.(D) The speeds of both P and S waves are slightly greater than previously thought.(E) Below 650 kilometers earthquakes cease to occur.

Answer :

Deep occurrences take place elsewhere than at the meeting of crustal plates. The correct response is (b).

The crust of the Earth is made up of tectonic plates, commonly referred to as crustal plates. There are numerous minor plates as well as seven large plates. The Earth's crust and highest layer of the mantle are both included within tectonic plates.

Tectonic plates come in two different varieties. The majority of the time, oceanic plates are found there. These plates are known as continental plates. The topography, or relief, of the Earth's surface is shaped by the interaction of the plates, much like when two continents collide.

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