In terms of grams of carbon per square meter per day, the open-ocean environment is about as productive as ________.
A. tropical rain forests
B. intensively farmed fields
C. prairie land
D. deserts
E. alpine forests
Answer: D
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The largest of the western boundary currents is the ____
A) Gulf Stream B) California Current C) East Pacific Gyre D) Canary Current
Dry haze scatters more sunlight than wet haze and causes a more noticeable drop in visibility
Indicate whether the statement is true or false
To be considered marine, a species must spend how much of its life in the marine environment?
A. 90 percent B. 25 percent C. 50 percent D. 100 percent E. 75 percent
Which of the following best explains the pattern of atmospheric carbon dioxide seen above Slovakia in January 2004?
A) The relatively high levels of CO2 are the result of recent, widespread deforestation. B) The higher values are a result of Europe's large automobile fleet. C) There is no significant difference in CO2 in January compared to July 2004. D) The relatively high levels of CO2 are a result of diminished photosynthesis and respiration by flora during the low-sun season. E) The relatively low levels of CO2 are a result of diminished photosynthesis and respiration by flora during the low-sun season.