Where is air density the highest?
A. Sea level
B. The Great Plains
C. Mount Everest
Answer: A
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Of the four agents of erosion–water, wind, and ice–the one that can move only small-sized sediments is
A) water. B) wind. C) ice. D) all of these
James Hutton made all of the following observations that called into question the Neptunist hypothesis for rock formation, except
A) veins of Primitive Rock in Stratified Formations. B) volcanoes were rare relatively recent phenomena. C) most silicate minerals are practically insoluble in water. D) near contact with Primitive Rock, the Stratified Formation appeared modified.
Which layer of Earth is divided into tectonic plates?
a. lithosphere b. asthenosphere c. mantle d. inner core e. outer core
The maximum penetration of visible light in clear seawater is about ________ meters.
A. 1000 B. 300 C. 100 D. 500 E. 200