Answer:
C. the addition of new lithospheric mantle as a result of cooling
Explanation:
- The oceanic lithosphere is a part of the asthenosphere and the upper mantle and its thickness depend on the distance away for the mid-oceanic ridges.
- This is evident from the studies of the seafloor spreading and the cooling of the plates and rocks masses. As the hot magma upwells and then cools at a certain degree and the cooled plates move away from the center.
Answer: Aqueduct
Fred Eaton, mayor of Los Angeles, promoted a plan to take water from Owens Valley to Los Angeles via an aqueduct. The aqueduct construction was overseen by William Mulholland and was finished in 1913.
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Answer:
At convergent boundaries, collisions occur as lithospheric plates move toward each other.
Explanation:
A is not correct because the movement of the tectonic plates is not driven by magnetism.
B is not correct because at this type of boundary the tectonic plates move toward each other, not slide past each other.
C is not correct because the plates move toward each other at this type of boundary, not move away from each other.
D is correct because at this type of boundary the plates move toward each other, and as they do collisions occur, resulting in the formation of mountains and subduction zones.
