What percent age of the U.S. population lives with unhealthy levels of air pollution
A) 33%
B) 41%
C) 59%
D) 62%
B
Environmental & Atmospheric Sciences
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Which of the following choices is an example of a primary volcanic hazard?
a. tsunami b. lahars c. pumice falls d. long-term volcanic degassing e. severe weather conditions
Environmental & Atmospheric Sciences
Atoms of which of the following elements are smallest?
A) Cl B) P C) S D) None, they are all the same size.
Environmental & Atmospheric Sciences
What dynasty led China during its "golden age"?
a. Tang b. Ming c. Zhou d. Qin e. Han
Environmental & Atmospheric Sciences
"Iron hat" is often a good indicator of which type of buried mineral deposit?
A. Copper oxide B. Copper sulfate C. Copper sulfide D. Copper carbonate
Environmental & Atmospheric Sciences