The greatest concentration of destructive earthquakes lies:
a. along the mid-oceanic ridges.
b. along the Pacific Ring of Fire.
c. in Australia.
d. in the Appalachians.
e. at hot spots.
B
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The relationship between the size of an object on a map and its size on Earth's surface is
A) geography. B) spatial analysis. C) relief. D) scale.
Why does the ratio of oxygen 18 to oxygen 16 in the oceans increase during an ice age?
A) More precipitated water remains on land instead of running back to the sea. B) There is a different kind of radioactivity occurring in the ocean at the colder world temperatures. C) There is a different kind of radioactivity occurring on land at the colder world temperatures. D) Sea water freezes into glaciers.
How do scientists measure melting of the Antarctic ice sheets?
What will be an ideal response?
The warm air being lifted in this map is mostly located in the ________ portion of the map.
A. northern B. western C. southern D. eastern