Some parts of Earth appear unaffected when acid rain falls. This is because they ________
A) channel the runoff into large rivers
B) have few cities and acid rain tends not to affect natural settings
C) have alkaline soils
D) are covered with types of marble
E) are outside of the United States
Answer: C
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What statement most accurately describes the theory of seafloor spreading?
A)Subduction zones produce oceanic crust that moves away from these zones by seafloor spreading toward mid-oceanic ridges where it is consumed. B)Oceanic crust continuously forms across the seafloor and is moved by subduction zones toward mid-oceanic ridges where it is consumed. C)Oceanic crust continuously forms at mid-oceanic ridges, moves away from these ridges by seafloor spreading, and is consumed at subduction zones. D)Earth's molten core material erupts at mid-oceanic ridges, moves away from these ridges by seafloor spreading, and is consumed at subduction zones. E)Subduction zones force oceanic crust to spread across the seafloor before being consumed at a fault valley.
Give an example of a way in which rural people are pulled to migrate to cities, and an example of a way in which rural people are pushed to migrate to cities.
What will be an ideal response?
Urbanization
A. decreases temperature over the city center. B. increases rainfall over the city center. C. can raise or lower relative humidity. D. reduces levels of smog, especially in the summer.
An historical process that encompasses the entire economic and social life of a nation, resulting in change for the better is known as ________
Fill in the blank(s) with correct word