Which decade was the warmest on record?
A) 1930-1939
B) 1960-1969
C) 1990-1999
D) 2000-2009
D
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Which of the following statements is true of electromagnetic radiation?
A) All electromagnetic radiation has the same energy. B) As the wavelength of the radiation increases, the energy of the radiation decreases. C) As the wavelength of the radiation increases, the energy of the radiation increases. D) There is no specific relationship between wavelength and energy.
Closely spaced isobars on a map indicate:
a. strong pressure gradient. b. northerly winds. c. winds of low velocity. d. weak breezes.
The Peru-Chile trench is moving over the ________ Plate as South America moves west.
A. Antarctic B. Australian C. Nazca D. South American E. North American
A “biodiversity hotspot” is
a. an area located near the equator. b. an area that supports few, but large, species. c. an area that contains naturally high numbers of people. d. an area that contains a large number of endemic species.