Sixteen of the world's twenty most polluted cities are found in ____.
A. the United States
B. Brazil
C. the Ukraine
D. China
E. Mexico
Answer: D
Environmental & Atmospheric Sciences
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An aerial burst occurred in the Tunguska River valley of ________ in 1908
Fill in the blank(s) with correct word
Environmental & Atmospheric Sciences
Stronger and more numerous hurricanes have been predicted as a possible result of global warming
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
Barrier reefs have lagoons
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
The Russian region is fairly flat, mainly being comprised of a series of plains and plateaus
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences