With today's technology, wind energy could only meet 30-40% of total electricity needs in the United States. All of the following are reasons why wind energy cannot meet a greater portion of our energy needs except:
A) Wind turbines are only 30-40% efficient at converting wind energy into electricity.
B) We cannot efficiently move electricity across a large grid from windy areas to distant areas where there are no wind farms.
C) Wind is an intermittent resource and may not be blowing when we need the electricity.
D) We have no efficient way of storing excess amounts of electricity produced when it is windy.
C
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A social movement dedicated to protecting the earth's life support system for all forms of life is called ____________________.
Fill in the blank(s) with the appropriate word(s).
The book Silent Spring, by Rachel Carson, described progress in reducing pollution and showed that pesticides like DDT were no longer a concern due to effective environmental programs.
Answer the following statement true (T) or false (F)
Plantation America refers to
A) a cultural region within the Americas. B) a cultural region within the Americas that was primarily coastal and engaged in monocropping. C) villages for freed or runaway slaves. D) a primarily coastal area engaged in monocropping. E) the way of life found with the American Deep South prior to the Civil War
A(n) ____________________ is a fault block that has been downdropped between two normal faults
Fill in the blank(s) with correct word