The general term describing the pollution related decline in insolation to the Earth's surface is
A) earthshine.
B) atmospheric albedo.
C) contrails.
D) global dimming.
E) greenhouse effect.
D
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the banding characteristic of metamorphic rocks is ________.
a - uniformitarianism b - stratification c - foliation d - relief e - magma
From this cross section of the Grand Canyon, the oldest rocks or structures are the
A) Late Cenozoic basalts.
B) Mesozoic sedimentary rocks.
C) Precambrian sedimentary and igneous rocks.
D) Precambrian metamorphic rocks and granite.
E) Hurricane fault and faults along the Grand Wash Cliffs.
The temperature below which magnetic material can retain a permanent magnetization is called the ________.
a. Darcy temperature b. Vine temperature c. Bullard point d. Curie point
Oceans are about four times as deep as mountains are high. At the bottom of the ocean are
A. thick oceanic crust at the ocean ridges that gradually thins as it nears the deep ocean trenches. B. towering plutonic mountains created from volcanoes and fissure eruptions at the oceanic trench areas. C. huge towering mountains, deep valleys, and deep ocean trenches near the continental borders. D. all of the above