That the northern continents were once joined and located along the equator was shown by what?
a. the coal-age plant fossils of North America and Europe
b. the Glossopteris flora
c. the distribution of mountain ranges
d. the distributions of Permian and Triassic reptiles
e. the distributions of northern hemisphere glacial tillites
a. the coal-age plant fossils of North America and Europe
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Chain migration involves the influence of ________.
A. kin groups B. family C. friends D. all of these E. none of these
A freight train rolls along a track with considerable momentum. If it rolls at the same speed but has twice as much mass, its momentum is
A) zero. B) doubled. C) quadrupled. D) unchanged.
What is a typical characteristic of passive margins?
a. Volcanic activity b. Coincide with plate boundaries c. Narrow continental shelf d. Broad continental shelf e. Deep trenches
________ represents the most rapid cycling of nutrients of all soil-forming processes
What will be an ideal response?