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Biology 11 Online
OpenStudy (anonymous):

What two instruments made navigation much easier in the 1900s? Global Positioning Satellite (GPS) and two-way radio The chronometer and the astrolab The cross-staff and the compass. The chronometer and the compass.

OpenStudy (anonymous):

@e.mccormick

OpenStudy (anonymous):

@thomaster

OpenStudy (anonymous):

@ganeshie8

OpenStudy (anonymous):

@Luigi0210

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