What are the three possible explanations for the distribution of paleomagnetic data? Which one of these explanations is correct?
(1 ) The continent remained fixed and the north magnetic pole moved; (2 ) the north magnetic pole stayed still and the continent moved; (3 ) both the continent and north magnetic pole moved. The correct explanation is that both the continent and north magnetic pole moved.
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The focal point of the earliest Russian culture was centered around Slavic principalities in the area of which two modern cities?
A. Moscow and St. Petersburg B. Vladivostok and Irkutsk C. Novgorod and Kiev D. Stalingrad and Leningrad
Baleen whales lack ________.
A. a blowhole B. a dorsal fin C. teeth D. flukes E. an ear opening
Ventifacts are created by eolian erosion
Indicate whether the statement is true or false
When rock heats and liquefies into magma its volume ________.
A. does not change B. decreases due to sublimation C. expands, and neighboring brittle rock must fracture and move out of the way D. decreases and neighboring brittle rock collapses to make up for the loss of volume