The elevation limit of a stream downcutting on a land mass is called _______.
a - meandering
b - base level
c - talus
d - ground zero
e - a drainage anomaly
b - base level
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Two objects move toward each other because of gravity. As the objects get closer and closer, the acceleration of each
A) increases. B) decreases. C) remains constant.
On Earth today, mountains such as the Himalayas are rising because of
A) extensive erosion caused by increases in rainfall in those regions. B) subterranean pockets of natural gas forcing their way to the surface. C) low density rocks that are being forced upward through high density rocks. D) collisions between tectonic plates.
Which of the following is an example of a polycarbonate?
A) Lexan B) nylon-66 C) polystyrene D) poly(ethylene terephthalate)
In which of the following environments is the lithosphere likely to be thinnest?
A. a tectonically active continental margin B. beneath a mid-ocean ridge C. the interior of a continent away from plate boundaries D. beneath a typical part of the abyssal plain