The rotational energy of the blades of a wind turbine ________
A) generates as much greenhouse gases as burning natural gas
B) drives a generator inside the nacelle compartment to produce electricity
C) is used to generate hydrogen from water
D) will not occur unless electricity is provided to generate the motion
E) is so expensive to produce that no commercial development has been possible
B
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The study of controls over the distribution and abundance of living things is called
A) ecosystem restoration B) biota C) ecosystem management D) ecology
Different isotopes are useful in different dating processes. Suppose we wished to determine the age of an object which we suspect to be approximately 10,000 years old. An isotope with which of the following half-lives would be most appropriate for this project?
A) 50 years B) 500 years C) 5,000 years D) 50,000 years
The subarctic climate of Asia can be attributed to the monsoon circulation associated with that region
Indicate whether the statement is true or false
The dry conveyor belt forms in the cold, very dry region of the upper mesosphere
a. True b. False