When an air mass is warmer than the surface over which it is moving:
A) visibility within the air mass is usually very good.
B) the lapse rate in the air mass is increased.
C) the air becomes more stable.
D) the letter k is added after the air mass symbol.
C
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Firewood burns better than granite rocks because
A) firewood has more potential energy. B) firewood has more kinetic energy. C) rocks have more potential energy. D) rocks have more kinetic energy.
The 98th meridian marks an important biophysical marker in North America for which biome where increasing aridity produces vegetation of a distinctly different stature?
A) midlatitude broadleaf and mixed forest B) desert C) Mediterranean shrubland D) midlatitude grassland E) tropical savanna
The origin of amphibians from fish is an example of
a. microevolution. b. macroevolution
What is favorable news associated with global warming?perhaps one of the few advantages?
a. There will be more rainfall b. There will be a change in terrestrial ecosystems c. The Northwest Passage will be open d. There will be a rise in sea level