A. Would be the correct answer.
Universe holds all the galaxies and galaxies hold all the solar systems
Some of the physiographic features that cause extreme aridity may be found together within a <span>single desert, but t</span>he deserts found in the western united states are primarily the result of being located within the rain shadow of one or more mountain ranges.
GIS is basically used to study geologic features and etc, it creates 3D displays of geographic features
The answer is b because I just took my test and got it right so good luck