Achange in a system can either be increased or decreased by ____.
A. feedback
B. efficiency
C. energy quality
D. electromagnetic radiation
E. conduction
Answer: A
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Why is it important that we have a rigid lithosphere overlying a weak asthenosphere?
A) If we did not have the rigid lithosphere and weak asthenosphere, we would be bombarded by cosmic rays that would strip away our atmosphere. B) If we did not have the rigid lithosphere and weak asthenosphere, the atmosphere would be very different with either too much ammonia and methane or too little oxygen and water. C) If we did not have the rigid lithosphere and weak asthenosphere, the earth would not have plate tectonics and would be covered entirely by water. D) If we did not have the rigid lithosphere and weak asthenosphere, we would be bombarded by meteorites and we would not be able to hold the moon in orbit.
At divergent plate boundaries, the operating forces are:a
compressional. b. lateral shearing. c. tensional. d. thrusting. e. normal
What is the main problem that has developed in the Ogallala aquifer?
A. Precipitation is heavier to the east, causing tilting of the entire formation. B. Overpumping may cause southern parts of the aquifer to go dry in the next 100 years. C. It has become contaminated with radioactive waste from the Chernobyl accident. D. None of these.
What is not a factor in the amount of light penetrating the ocean?
A) The angle at which the light approaches the Earth B) The surface turbulence of the ocean C) The amount of light absorbed by clouds D) The presence of ice or foam on the surface