In what geologic period did lobe-finned fish adapt to terrestrial environments?
A) Cambrian
B) Devonian
C) Triassic
D) Ordovician
Answer: B
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Matching
1. On the generalized population age structure figure, choose the diagram with similar numbers of males and females in prereproductive and reproductive categories. 2. On the generalized population age structure figure, choose the diagram with demographic momentum. 3. On the generalized population age structure figure, choose the diagram that represents a population that is increasing slowly. 4. On the generalized population age structure figure, choose the diagram that shows a declining population.
Ground water can seep out at the surface
A) when the water table is low because the land surface is low. B) when the water table intersects the ground surface. C) when the water table is high because the land surface is high. D) when runoff enters the channel during and shortly after rainfall.
The modern form of consumption is
A) conspicuous consumption. B) epitomized by HDTV. C) highly regulated. D) consumerism. E) heavily taxed.
Offshore barrier islands typically stand more than 4 meters higher than sea level
a. True b. False