Knobs of bedrock that rise up from smooth desert pediments are ____
a. easily eroded
b. deposits of alluvium
c. loess
d. inselbergs
d
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The American alligator was almost hunted to extinction, but was protected starting in the late 1960s and has made a remarkable recovery. Which best describes the change in overall biodiversity that occurred from 1960 to 2000 in ecosystems due to changes in alligator population? Confine your analysis to ecosystems where alligators are native and ignore the contribution due to changes in the alligator population.
A. increased B. decreased C. stayed the same D. impossible to determine
Which of the following coordinate systems is used outside of the United States?
A) Universal Transverse Mercator B) State Plane Coordinate System C) Public Land Survey System D) All of these are used outside of the United States.
Volcanic bombs have a twisted, streamlined shape, which indicates that they ____
A)cooled quickly underwater B)were formed from ropy, viscous mafic flows C)were erupted as globs of magma that cooled and solidified during their flight through the air D)have high amounts of dissolved gases and low amounts of sodium E)were erupted gently from a shield volcano and cooled as they moved downslope
Warming temperatures can lead to both increases and decreases in lake levels
Indicate whether the statement is true or false