Over time, the extensive addition of water through irrigation practices can actually lead to desertification
Indicate whether the statement is true or false
T
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The Superfund Act
A. was not established until 2006. B. avoids establishing liability. C. funds the remediation of abandoned toxic sites. D. None of these choices are correct
The Mohorovicic discontinuity exists because
A) the temperature inside Earth changes with depth. B) the rock at this depth transitions from lower density to higher density. C) there is change in the physical state of rocks on both sides of the boundary. D) there is a difference in conductivity of the rocks on either side of the boundary.
The Polynesian colonies used a system of shells and bamboo to represent island positions for navigation
a. True b. False
Although George Airy's hypothesis better explains surveying errors in the Himalayas, John Pratt's hypothesis better explains
A) how the Himalayas formed in the first place. B) elevation differences between oceans and continents. C) surveying errors in the Appalachian Mountains. D) isostatic adjustments to ice-age glaciers.