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

Environmental & Atmospheric Sciences

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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

Environmental & Atmospheric Sciences

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.

Environmental & Atmospheric Sciences

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

Environmental & Atmospheric Sciences

________ represents the most rapid cycling of nutrients of all soil-forming processes

What will be an ideal response?

Environmental & Atmospheric Sciences