Which of the following methods are used to measure deep ocean currents directly?

A) Accidental spills from container ships
B) Free-drifting Argo floats
C) Propeller flow meters
D) Radar altimeters
E) Radio-transmitting float bottles


B

Environmental & Atmospheric Sciences

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Explain the three stages of demographic transition as theorized by Frank W. Notestein.

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Carbonate rocks exposed at the surface in wet environments will

A. appear smooth and unaltered. B. not react chemically to water. C. dissolve and weather readily.

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Where would you find a kelp forest?

A) in a silty coastal area B) along a continental shelf C) in an estuary D) in a salt marsh E) in a coral reef

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