In a warmer world, higher latitudes would have a __________ growing season
a. shorter
b. longer
b
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The Global Positioning System (GPS) can specify location change as small as 2 mm.
a. true b. false
How many times a day are radiosondes launched for upper-air data?
A) once B) twice C) three D) four
Forty percent of the world's population lives in the developing world
Indicate whether the statement is true or false
Which of the following statements is not true?
A. An oxygen sag curve describes changes in a stream's dissolved oxygen content along its length below an organic-matter source. B. A body of water is described as "dead" when it contains fatal concentrations of toxic chemicals. C. Chemical treatment of sediment can be effective in reducing pollution problems, but it must be repeated every few years. D. Fast-flowing streams are generally better aerated than are lakes.