1 .		Your body is an open system. When this system needs ice cream, your stomach sends a signal to your brain, which activates your hands and mouth to do something about it. The same pathway lets you know when you've had enough or too much ice cream. This pathway is an example of
2 .		Given that all map projections distort one or another aspect of Earth's surface, which projection is considered the best?
3 .		View this diagram of a complex system model that integrates biophysical and economic systems. Which of the following uses do you think such a model might have?
4 .		In this model, economic, demographic, and technological data
5 .		The ocean-atmosphere subsystem in this model
6 .		In 1972, a new time system replaced Greenwich Mean Time. What is the name of this time system, which is now the legal reference for official time in all countries?
7 .		Latitude, longitude, elevation, and Earth measurements are calibrated using a handheld instrument that reads radio signals from satellites. What is the name of this technology?
8 .		Which of the following is NOT a type of map scale?
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