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What does it mean by “reprojection”?

A map projection transforms the geographic coordinates on an ellipsoid into locations on a plane.

How does an ellipsoid differ from a sphere in approximating the shape and size of the Earth?

When converted from NAD27 to NAD83, horizontal shifts of point positions in the conterminous United States can be as much as 100 meters (328 ft).

All layers to be used together in a GIS operation must align spatially.

Explain the difference between the standard line and the central line.

According to the 2010 US Census, what race are most Hispanics?

Which description of rape is most generally correct?

Researchers have found that boys are responded to positively when they act in masculine ways. When they act in feminine ways, however, boys are either admonished or ignored. This finding provides the most support for which approach to gender?

When a person does not have adequate resources to maintain their health, such as enough food to eat, the person is said to be in