Which of these is considered to be a less-developed country?
A. Nigeria
B. United States
C. Japan
D. Germany
Answer: A
Environmental & Atmospheric Sciences
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Nitrates often used for gunpowders, explosives, and fertilizers (when combined with positive ions such as potassium, sodium, and calcium) have the chemical formula
A) N2. B) N2O. C) NO2. D) NO
Environmental & Atmospheric Sciences
Compared to a polar air mass, a tropical air mass is typically
A) cooler. B) dryer. C) less stable. D) farther from the equator. E) all of the above
Environmental & Atmospheric Sciences
Which of the following linkages is found in sphingolipids?
A) sphingosine-choline-phosphate B) sphingosine-phosphate-choline C) phosphate-sphingosine-choline D) none of the above
Environmental & Atmospheric Sciences
All common magnets contain at least
A. four poles. B. two poles. C. one pole. D. none of the above
Environmental & Atmospheric Sciences