Which requires more work: lifting a 25-kg sack vertically 4 m, or lifting a 50-kg sack vertically 2 m?
A. Lifting the 25-kg sack.
B. Lifting the 50-kg sack.
C. both require the same amount of work.
D. none of the above
Answer: C
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Climate change is causing all of the following except:
A. decreased rainfall in Africa B. longer growing season in the United States C. earlier fall frosts in the United States D. animal migration patterns are changing
The "group of 10" environmental organizations are most useful in
A. Inspiring individual direct actions by at least half of all members B. Spearheading truly radical environmental change C. Having strong, respected, and organized influence on national environmental policy setting D. Inspiring individual direct actions by all members E. Initiating student environmental activism on local environmental issues
________ terrestrial biome has the most biodiversity
A) Tropical rainforest B) Boreal forest C) Temperate rainforest D) Temperate deciduous forest E) Prairie
From a climatological perspective, a region is a desert if ________
A) yearly precipitation exceeds evaporation B) yearly precipitation is equal to evaporation C) yearly precipitation is less than evaporation