The vertical motions that occur when the air is unstable are termed:
A) cyclonic. B) geostrophic. C) subsidence. D) convergence. E) convection.
E
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The boundary between two air masses is called a(n)
A) dividing line. B) squall line. C) instability line. D) front.
Detritivores include ________
A) species that can break down cellulose, bone, and other durable biopolymers B) bacteria and fungi C) algae and photosynthetic bacteria D) millipedes, soil insects, many ants E) wolves, lions, oak trees
A knowledge of current world population density is of relatively little value in itself, primarily because the world population
a. is uniformly distributed. b. is unevenly distributed. c. changes its density each day. d. is declining in density. e. is predictable to very precise standards.
Tephra is the same as ____
a. lava b. pyroclastic material c. mudflows d. aa