Which of the following is NOT mined in Australia?
A) gold
B) diamonds
C) bauxite
D) lead
E) copper
B) diamonds
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In his 2005 book, Richard Louv maintains that today's children ________
A) develop more balanced emotions in urban compared to natural settings B) suffer psychologically and emotionally from "nature deficit disorder" C) should not be exposed to the dangers of natural ecosystems D) have a better understanding of natural environments than their grandparents E) should not participate in environmental education programs until high school
A rate of natural increase of 1.0 percent results in a doubling time of how many years?
A. 35 B. 140 C. 24 D. 70
Of the following fluvial terms, which is most closely associated with stream capture?
A) Beheaded B) Braided C) Thalweg D) Meander E) Interfluve
Nitrogen fixation occurs by both natural and human processes
Indicate whether the statement is true or false.