What caused the dramatic decline in Guam's native bird species?
A) climatic change in the region
B) the elimination of its food supply by humans
C) the thinning of their eggshells and the subsequent death of their young as a result of heavy DDT use on the island in the 1970s
D) radiation poisoning caused by nuclear tests of the United States and France
E) the accidental introduction of the non-native brown tree snake
E
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Record-breaking low temperatures are associated with which of the following types of air masses?
A. cP B. mP C. cT D. mT
Which of the following is NOT a significant problem associated with recycling?
A. There is not a market for many materials like glass and many plastics. B. People resist recycling. C. It is costly to separate the different materials in the waste stream. D. Many materials are contaminated with food and other materials.
Localized scattered thunderstorms are likely to occur:
a. during the early morning in the spring. b. on a cold, clear winter day. c. during the winter on cold nights. d. during the afternoon on a hot, humid day.
Vertical elevation differences in a local landscape are referred to as
A) relief. B) an order of relief. C) topography. D) crust.