Our alternating days and nights are caused by:
a. Earth rotation.
b. Earth revolution.
c. both Earth rotation and Earth revolution.
d. none of these
A
Environmental & Atmospheric Sciences
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Submarines explore the
a. Atmosphere b. Geosphere c. Biosphere d. Hydrosphere e. Troposphere
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The New World Monkeys differ from Old World Monkeys because the latter have prehensile
tails. Indicate whether the statement is true or false.
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Regions where seismometers do not record P and/or S waves are called
A) aseismic regions. B) nonseismic zones. C) seismic gaps. D) shadow zones.
Environmental & Atmospheric Sciences
What percentage of the sub-Saharan African population is urban?
A) 18% B) 20% C) 27% D) 37% E) 41%
Environmental & Atmospheric Sciences