Elongated hills, often in the shape of an inverted spoon, streamlined in the direction of glacial movement are called
A) eskers.
B) kettles.
C) drumlins.
D) horns.
C
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A collection of languages that share a common origin but have since evolved into individual languages is a
A) dialect. B) language branch. C) language family. D) language group. E) language root.
Polar bears are expected to lose less than 50 percent of their summer habitat by the year 2100.
Answer the following statement true (T) or false (F)
What is an interglacial?
A) an area between glaciers B) a warm period when glacial ice volume is relatively low C) a cold period when glacial ice volume is relatively high D) the zone of a glacier in which flow occurs
Of the following greenhouse gases, ________ concentrations have increased the most since 1750
A) nitrous oxide B) carbon dioxide C) ozone D) water vapor E) methane