Alfred Wegener's theory of continental drift seems so reasonable today. Why was it rejected during the early 20th century?
a) His jigsaw puzzle fit of the continental land mass showed large gaps and areas of overlap.
b) He could not provide a driving mechanism for the continents that could plow through the ocean basins.
c) His mountain formation concepts were not adequate.
d) The best evidence would not be available until sea floor dating and magnetic reversal data came along decades after his death.
e) All of the above
E
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Suggest and explain a reason why the Trail Canyon alluvial fan and the alluvial fan just to the north are so different in size.
The question is based on Map T-10, the “Furnace Creek, California” quadrangle (scale 1:62,500; contour interval 80 feet; dotted lines represent 20-foot contours). This portion of the Furnace Creek quadrangle shows the Panamint Range and the western side of Death Valley in Death Valley National Park (36°19'08"N, 116°53'25"W). Several large alluvial fans can be seen along the eastern front of the Panamint Range. The basin floor here is called the Death Valley “salt pan,” because salts have accumulated here in great thicknesses. What will be an ideal response?
The emergent layer of a rain forest would be most likely to have species that
A) prefer shade. B) have a high optimal temperature. C) have large, showy flowers. D) grow horizontally rather than vertically.
Locations with severe midlatitude climates such as Shenyang, China, experience
A) warm summers and cold winters. B) warm winters and cold summers. C) warm summers and heavy wintertime precipitation. D) cool winters and heavy wintertime precipitation.
The largest percentage of Earth's population lives within the
A) Microthermal climates. B) Desert climates. C) Tropical climates. D) Mesothermal climates.