What percentage of Earth's freshwater is locked up in polar ice caps?
A) 3% B) 70% C) 20% D) 30% E) 97%
B) 70%
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Turbidity currents are propelled by the water within them
Indicate whether the statement is true or false
According to the Hadley cell model, [INSERT FIGURE 8-4a. NO CAPTION]
A) air rises at both the equator and the poles B) air sinks at both the equator and the poles C) air sinks at the equator and rises at the poles D) air rises at the equator and sinks at the poles
Which of the following best describes a marsh?
A) wetlands that are periodically or continuously flooded and are dominated by herbaceous plants B) wetlands that are fed primarily by groundwater C) wetland with peat deposits that support a variety of evergreen trees and shrubs D) wetlands dominated by shrubs or trees that are fed by flowing water E) wetlands that are fed primarily from lakes and rivers
If a back-arc basin is associated with a volcanic island arc, what tends to develop there?
A) Submarine trench B) Wide continental shelf C) Long, linear sea D) Rift valley