What is another name for undercurrents?
a. Equatorial currents
b. Transverse currents
c. Countercurrents
d. Subterranean currents
ANS: C
Countercurrents typically accompany equatorial currents. They flow on the surface in the opposite
direction of the main current. They can be quite large. Information can be found in the section Surface
Currents Are Driven by the Winds.
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A) is the most economically feasible of all the renewable energy resources B) is the oldest of the renewable energy resources C) is widely available to all countries D) does not rely on fossil fuel to generate electricity E) produces no environmental effects
What is a difference between a caldera and a crater?
What will be an ideal response?
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A) have no impact on major weather patterns. B) can change substantially from summer to winter. C) stay in one place. D) maintain the same intensity year-round.
Primary productivity in estuaries is high because ____.?
A) ?light is seasonal and dim B) ?nutrients are abundant C) ?there is no saltwater D) ?there are no primary consumers