Which of these African countries produces about half of the GNI of the United States?
A) Nigeria
B) South Africa
C) Zimbabwe
D) none of these
D
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Which of the following is TRUE for the June Solstice?
A) The subsolar point is at the Tropic of Capricorn (23.5° S).
B) The Antarctic Circle is completely within the circle of illumination.
C) The subsolar point is at the equator.
D) The Arctic Circle is completely within the circle of illumination.
In toxicology studies, LD50 can be best described as the dose ________
A) at which 50% of an exposed population develops a chronic effect from the toxicant B) at which 50% of an exposed population develops disease C) at which more than 50% of the population dies as a result of the toxicant development D) at which 50% of an exposed population is killed or displays a specific symptom E) at which at least 50% of the exposed population is not affected by the toxicant
Hundreds of thousands of Palestinians became refugees as a result of
A) the creation and territorial expansion of Israel. B) the Iraq War. C) the Arab Spring. D) gerrymandering and redistricting.
Describe the temperature changes in the atmosphere with height, and discuss the important characteristics of the four atmospheric layers defined by temperature
What will be an ideal response?