When we say a circuit is DC, we mean that current in the circuit
A. is directly present.
B. has a single direction.
C. is parallel to the connecting wires.
D. alternates only slowly.
Answer: B
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Why is organic food a positional good?
a) Organic food is limitless in supply and therefore is aptly positioned for economic gain. b) Organic food is expensive and thus a ready source for social display for those in a position to pay for it. c) All social classes can access affordable organic food. d) All of the above.
The ________ is a flooded margin of the continent
A) continental shelf B) deep-ocean floor C) continental slope D) continental rise
Where are the most active volcanoes in the world?
A) Mexico B) Hawaii C) Italy D) Washington State, in the United States
Volcanic peaks on the deep-ocean floor with conical tops are called ________
A) seamounts B) tablemounts C) submarine canyons D) oceanic trenches E) oceanic ridges