How many semipermanent highs and lows typically exist in the northern hemisphere in January?

A. 10
B. 7
C. 5
D. 4


Answer: B

Environmental & Atmospheric Sciences

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Nutrient flow in an ecosystem is ________

A) bi-directional B) cyclical C) semi-conservative D) top down E) unidirectional

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A) lack of atmospheric water vapor. B) absence of clouds. C) formation of brine. D) melting ice.

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Where does ground amplification of seismic waves often take place?

A. In mountainous bedrock areas B. On a transform fault C. In sedimentary basins D. On a mid-ocean ridge

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