The rate at which saturated air cools with adiabatic ascent is
A) 10°C/km.
B) 8.3°C/km.
C) 3.3°C/km.
D) variable depending on temperature.
D) variable depending on temperature.
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Why are fossils of carnivores less common than fossils of other animals?
a. They don’t live in areas where fossilization is likely to happen. b. They are better able to escape sudden catastrophic events. c. Their large family units have a well-developed warning system.
d. They are warm-blooded and decay faster. e. They make up a small percentage of the animal population.
Until around 300 B.C., the world's largest settlements were in
A) Egypt and China. B) Mesopotamia and Egypt. C) Mesopotamia and the Indus Valley. D) the Indus Valley and the Yangste Valley. E) the Yangste Valley and Egypt.
Gene conversion mutation does which of the following?
A) creates a change at a single nucleotide B) copies nucleotide sequences from a pseudogene V into the V(J)D C) swaps exons of the constant region between highly repetitive regions D) all of these
In which of the following climates would vegetation be least likely to develop drought resistant characteristics?
a. low latitude desert b. humid continental, hot summer c. tropical savanna d. Mediterranean