Of the following choices, the environment with the highest net primary productivity is the
A) temperate deciduous forest.
B) open ocean.
C) coral reef.
D) cropland.
C) coral reef.
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What option below best characterizes the rainfall distribution at a station located on an island in the Arctic Ocean at about 80 degrees N latitude?
A) dry all year around B) adequate precipitation all year around C) summer dry season D) winter dry season
At the 2008 Olympics the Jamaican runner Usain Bolt ran the 100. meter dash in world record time of 9.69 seconds. What is this speed in miles per hour? [1 mile = 1.609 km]
A) 2.31 mph B) 4.33 mph C) 23.1 mph D) 43.3 mph
Which of the following statements is true?
A) Both aldehydes and ketones are easily oxidized. B) Neither aldehydes nor ketones are easily oxidized. C) Aldehydes are easily oxidized, but ketones are not. D) Ketones are easily oxidized, but aldehydes are not.
What country is the United States' single largest trading partner?
A) Japan B) Saudi Arabia C) Germany D) France E) Canada