Which of the following is not true of solar energy?
A) The United States receives as much energy in 35 minutes of insolation as we produce by burning fossil fuels in the United States in a year.
B) It can provide both heat and electricity.
C) Photovoltaic capacity has not increased in recent years.
D) Experimental photovoltaic cells have broken the 40% efficiency barrier.
C
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From where does the energy contained in a mature thunderstorm originate?
What will be an ideal response?
The reason that the Moon takes on a crescent shape each month has to do with the
A) Earth's shadow. B) Sun's position. C) both of these D) neither of these
At least three seismograph stations from three different locations are required to determine the epicenter of an earthquake.
Answer the following statement true (T) or false (F)
_________________ from industrialization has caused extensive damage to forests and fish populations in northern Europe.
-Acid rain -Wealth -none of these is correct -New technologies -Population growth