Index, or guide, fossils are most useful because they ____
A)occur over small geographic region
B)lived during a brief period of geologic time
C)rarely occur
D)lived over a long period of geologic time
E)are found in all types of rock
B
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Calcium carbonate affects coastal landforms because it is produced in huge amounts by ________
A) fish B) seaweed C) stream outflow D) erosion of rocks E) polyps
____________________ evolution is the development of similar characteristics in distantly related organisms
Fill in the blank(s) with correct word
From the perspective of the strands being synthesized, which of the following is true?
A) They are both synthesized in the 3' ? 5' direction. B) They are both synthesized in the 5' ? 3' direction. C) The leading strand is synthesized in the 3' ? 5' direction and the lagging strand is synthesized in the 5' ? 3' direction. D) The leading strand is synthesized in the 5' ? 3' direction and the lagging strand is seemingly synthesized in the 3' ? 5' direction.
Shear, or drag, velocity can be described as:
a. wind velocity at the maximum height of sand transport b. wind velocity at the average height of sand transport c. wind velocity at ground surface d. the velocity gradient above the land surface