Most active swimming fish use vertical fins ________
A) for swim propulsion
B) primarily as stabilizers
C) to hold onto prey
D) to increase the surface area
E) to turn, brake, and balance
B
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A 10 ohm resistor has 5 A current in it. What is the voltage across the resistor?
A) 5 V B) 10 V C) 15 V D) 20 V E) more than 20 V
Where there is rapid decomposition of plant matter, we expect to find soils that have
A) a very thin O horizon. B) a tremendous capacity to hold water. C) a particularly thick C horizon. D) high fertility and a very thick B horizon.
A geostrophic wind:
A) follows the pressure gradient force. B) curves around to flow toward its original source. C) flows perpendicular to the pressure gradient force. D) is usually not affected by the Coriolis force.
In general, the movement toward sustainability is
A) declining as interest in sustainable environmental policy declines. B) a distant philosophical goal of the environmental movement. C) faced with growing opposition from economic interests. D) growing with greater interest from governments and businesses.