On average, the illuminated zone in oceans is to a depth of ________, but in some oceans may be as deep as ________
A) 100 m (330 ft); 500 m (1,640 ft) B) 60 m (200 ft); 300 m (1,000 ft)
C) 30 m (100 ft); 900 m (3,000 ft) D) 20 m (66 ft); 30 m (100 ft)
B
Environmental & Atmospheric Sciences
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a. 50 b. 100 c. 500 d. 1,000 e. 10,000
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Regions where seismometers do not record P and/or S waves are called
A) aseismic regions. B) nonseismic zones. C) seismic gaps. D) shadow zones.
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What will be an ideal response?
Environmental & Atmospheric Sciences