Most water vapor comes from A) rivers and streams. B) the ...

[B]

Most water vapor comes from
 A) rivers and streams.
  B) the oceans.
  C) falling rain and snow.
  D) sublimation of snow and ice.
  E) respiration by living organisms.

Question 2

Data on atmospheric carbon dioxide concentrations from Mauna Loa, Hawaii, show that
 A) there is no consistent pattern in carbon dioxide concentration fluctuations.
  B) carbon dioxide concentrations decrease in winter.
  C) outgassing from the active volcanoes in Hawaii renders the data unusable.
  D) the concentration of carbon dioxide in the atmosphere is increasing.
  E) none of the above

[srodz]

Answer to Question 1

B

Answer to Question 2

D