It is easier to significantly alter the earth's CO2 balance than ...

[ENagel]

It is easier to significantly alter the earth's CO2 balance than its O2 balance because
 
  A) CO2 is a trace molecule in the atmosphere whereas O2 is not.
  B) it is so much easier to produce CO2.
  C) CO2 is a highly reactive molecule whereas O2 is inert.
  D) CO2 is an inert molecule whereas O2 is highly reactive.
  E) CO2 is a very unstable molecule whereas O2 is stable.

Question 2

According to quantum field theory, the universe if made of
 
  A) photons.
  B) quantized fields.
  C) electromagnetic fields.
  D) baseball fields.
  E) particles moving in empty space.

[millet]

Answer to Question 1

A

Answer to Question 2

E

[ENagel]

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