Shale oil and tar sands ____ than conventional oil deposits.
A. are easier to extract
B. have a lower net energy yield
C. have less environmental impact
D. are in shorter supply
E. are less expensive to produce
Answer: B
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Mollisols are widespread in the United States. occurring throughout the Great Plains region
Indicate whether the statement is true or false
The United Nations Convention on the Law of the Sea allows coastal states, including island nations, to claim up to 400 nautical miles of the ocean off their shores as an Exclusive Economic Zone
Indicate whether the statement is true or false.
As a train of water waves goes by, a piece of cork floating on the water bobs up and down one complete cycle each second. The waves are 2 m long. What is the speed of the wave?
A) 0.25 m/s B) 0.50 m/s C) 1.0 m/s D) 2 m/s E) 4 m/s
Which one of the following sources of energy is both renewable and sustainable?
A) Natural gas used to heat homes B) Gasoline used to run cars C) Hydroelectric dams D) A coal-fired electrical power plant