Why does earth have latitudes and longitudes

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The latitude and longitude lines are used for pin pointing the exact location of any place onto the globe or earth map. The latitude and longitude lines jointly works as coordinates on the earth or in the map. The distance between the equator and prime meridian along with direction indicates the location of any place on globe or map.

Answers

2014-06-03T15:39:33+05:30
Latitudes and longitudes are imaginary lines on earth which are used to locate places.
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2014-06-03T15:45:54+05:30
Latitude and longitude are required because every single spot on earth can be identified by global latitude and longitude . 
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latitudes and longitudes are needed because they help in easy finding of places on the earth.
The latitude and longitude lines are used for pin pointing the exact location of any place onto the globe or earth map. The latitude and longitude lines jointly works as coordinates on the earth or in the map. The distance between the equator and prime meridian along with direction indicates the location of any place on globe or map.