In what decades did much of Africa become independent?
A) 1910s and 1920s
B) 1930s and 1940s
C) 1950s and 1960s
D) 1970s and 1980s
E) 1990s and 2000s
D
Environmental & Atmospheric Sciences
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Coal is a detrital (clastic) sedimentary rock. Indicate whether the statement is true or false
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Wegener was the first scientist to reassemble the continents according to geology and geometry
a. True b. False
Environmental & Atmospheric Sciences
Which of the following cycles are biogeochemical cycles?
a. The hydrologic cycle b. The carbon cycle c. The rock cycle d. All of the above e. Both a and b
Environmental & Atmospheric Sciences
By the year 2050, the world needs to cut its greenhouse gas emissions by ____% in order to prevent the planet from heating up by more than 3.6o F (2o C).
A. 5-15 B. 15-25 C. 25-50 D. 50-85 E. 100
Environmental & Atmospheric Sciences