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Science

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Do global positioning systems use elevation on Earths system to find latitude and longitude
A. By using signals from a network of satellite
B. By using topographic maps
C. By using satellite images
D. By using photography

  • Science?? - ,

    This doesn't make any sense. Please check for typos and repost.

  • Science - ,

    You can get better service if you don't change screen names.

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