In a graph of the history of U.S. energy use since 1950, why does ...

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In a graph of the history of U.S. energy use since 1950, why does the graph drop sharply after 1973?
 
  A) The 1973 mideast oil embargo was followed by increased prices and a drop in consumption.
  B) The Texas oil fields produced far less oil beginning in 1973, causing a price increase and a drop in consumption.
  C) The Texas oil fields produced far less oil beginning in 1973, resulting in rationing and a switch to natural gas.
  D) The 1973 mideast oil embargo was followed by gasoline rationing and a switch to domestic natural gas.
  E) Analysts have not yet found a good explanation for this drop in U.S. energy use.

Question 2

A one kilogram grapefruit weighs ten newtons. Suppose we take this grapefruit to the moon. The force of gravity on the grapefruit will then be
 
  A) less than one kilogram.
  B) less than ten newtons.
  C) ten newtons.
  D) one kilogram.
  E) None of the above.

[kalskdjl1212]

Answer to Question 1

A

Answer to Question 2

B

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Gracias!

[atrochim]

Excellent