If upper-level divergence exceeds surface convergence, the air pressure at the center of the low will ____, and the isobars will become ____ tightly packed
A) decrease; less
B) decrease; more
C) increase; less
D) increase; more
B
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The removal of a single or small groups of mature trees is called
A. selective cutting. B. seed-tree cutting. C. clear-cutting. D. shelterwood cutting. E. strip cutting.
The world "reserves," when used in the context of amounts of minerals that can be recovered for use, is an economic term, not a geographical or geological term
Indicate whether the statement is true or false.
What data were used to develop the first geologic time scales?
A. the fossil record B. analyses of radioactive elements C. uniformitarianism
The huge volume of mafic magma that erupted to form the Columbia plateau basalts of Washington and Oregon are attributed to ________.
A. sea floor spreading B. subduction C. a hot mantle plume D. meteorite impact E. magma mixing