Some geographers believe sustainable development will bring about the "Third Revolution," a shift in human ways of interacting with the Earth so dramatic that it will be compared with the origins of agriculture and industry
a. True
b. False
Indicate whether the statement is true or false
True
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Rocks above and below an unconformity are related
a. True b. False
The _______________ is the arbitrary starting point for longitude measurement
Fill in the blank(s) with correct word
Israel has been irrigating crops for over 60 years and has experienced very few problems from soil salinization. How have they avoided this type of soil degradation?
A. They only use highly efficient irrigation techniques. B. Israel does not have an arid environment. C. The soils are not highly mineralized. D. They only use the gravity flow method.
The least amount of magnetic force on a moving electron occurs for motion
A. at non-right angles to the magnetic field direction. B. parallel to the magnetic field. C. perpendicular to the magnetic field. D. none of the above