Between 2001 and 2009, what percentage of California forest fires was lightning-caused?
a. ?2 percent
b. ?5 percent
c. ?10 percent
d. ?17 percent
e. ?30 percent
ANSWER: b
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In the 19th century, the geologic time scale was first developed using radiometric age dating
techniques. Indicate whether the statement is true or false.
Plants with showy flowers typically ________
A) decrease biodiversity in an area B) are pollinated by wind C) are genetically modified by animals D) are preferentially eaten by herbivorous animals E) are pollinated by animals
The securitization of finance and the investments created by it, unlike FDI,
A) tend to create few jobs. B) are invisible to all but a few agents. C) act on a short-run with unpredictable consequences. D) are often provided by non-traditional suppliers. E) all of the above
The four major classes of Earth's biomes are:
a. forest, grassland, desert, and highlands. b. grassland, desert, tundra, and forest. c. forests, shrubs, grasslands and tundra. d. none of these