Guide fossils are most useful because they ____
a. occur over a small geographic area
b. occur over a brief time interval
c. are difficult to identify
d. occur over a long period of time
e. occur in all rock types
b
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Geographers Griffin and Ford show that in Latin American cities, wealthy people
A) push out from the center in a well-defined elite residential sector. B) push into the center in a well-defined elite residential sector. C) have always lived exclusively in the center. D) have always lived in the peripheries away from the center. E) abhor the city center because of the high marginal tax rates.
How do lava tubes form in basaltic lavas? How can the exterior solidify if the interior is still fluid?
What will be an ideal response?
Precipitation with the greatest size (diameter) is?
a. ?the snow pellet. b. ?the snow grain. c. ?a hailstone. d. ?sleet. e. ?a rain drop.
The time it takes for half the atoms of the isotope to decay is called as the half-life period.
Answer the following statement true (T) or false (F)