Debris flows are most common in mountainous areas such as the U.S. southwest
a. True
b. False
ANSWER: True
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According to the World Bank, ________ has 16 of the 20 most air-polluted cities on earth
A) China B) Brazil C) Mexico D) United Kingdom E) the United States
Which of the following are advantages of remote sensing systems?
a. They provide rapid, worldwide coverage of the environment. b. They can easily acquire information on inaccessible locations. c. They can be used to locate valuable natural resources. d. All of these.
Scientists often depict their understanding of an organism's evolutionary ancestry in diagrams called ________
A) taxonomic trees B) ancestral trees C) phylogenetic trees D) branchograms E) classification trees
What society constructed terraces to reduce soil erosion and allow irrigation canals to flow?
A) Mayan B) Incan C) Aztec D) Spanish E) Portuguese