Answer:
c
Explanation:
Seafloors consist of oceanic crust. This crust is denser and heavier than its continental counterpart and sinks underneath the continental crust at subduction zones.
The rocks are melted in the upper mantle, and some are then expelled through volcanic activity, hot spots, or lava flows. The chemistry of the rocks change after being melted and when they reemerge they are lighter than when they were first subducted.
Deformation of a surrounding land: this includes different elevations or heights of lands
Small earthquakes/tremors
Animals might migrate to another area
A radiometric age for a mineral crystal inside an igneous rock measures the amount of time that has passed since the atoms within the crystal were part of a body of molten magma.
<h3>What is igneous rock? </h3>
Igneous rocks create when lava colds and crystallizes, either on the boundary of the Earth or heavy inside the crust.
Because of the high heat present underneath, all magma forms in the lower crust or upper mantle.
A mineral crystal's radiometric age in an igneous rock indicates how long it has been since the atoms within the crystal were part of a molten magma body.
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A bureau is defined as the department or division of the government, that is helpful for distributing the data and collecting the work.
<h3>
How does the US Census Bureau define an urban area?</h3>
Urban are defined as the areas that including at least 2,500 and less than 50,000 people. On the other hand, "Rural" defined as any population, housing, or territory outside urban areas.
Urban areas are generally defined as the towns and cities. Under these areas people have sufficient amount of money because the job availability.
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