What is NOT an aspect of the theory of plate tectonics?
A. Seafloor spreading results from rising magma.
B. Midocean ridges have the newest-formed crust.
C. Subduction zones are where crust is re-melted.
D. Deep ocean trenches are tectonically inactive.
E. Earthquakes match oceanic trenches and ridges.
D
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Which of the following pairs of events appear to be linked?
A. increased atmospheric carbon dioxide and low pH in the ocean B. increased atmospheric carbon dioxide and increased temperature of Earth C. melting glaciers and increased sea level D. All of these statements show logical linkage.
Societies with the bulk of their employment in the primary sector are called pre-industrial
Indicate whether the statement is true or false.
How is the ocean a reservoir for carbon? How is the carbon dioxide able to re-enter oceanic and
atmospheric cycles? What will be an ideal response?
What type of region would the countries of Europe be classified as?
a. vernacular b. formal c. functional d. nodal e. perceptual