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4th Grade- Chapter 4
The Midwest
| Question | Answer |
|---|---|
| alternative energy | energy produced from a renewable resource that creates little or no pollution |
| assembly line | an arrangement of machines, equipment, and workers in which work passes from operation to operation in a direct line until the product is made |
| automation | the method of making a device, a process, or a system operate by itself |
| discrimination | the act of treating a person or a group unfairly by other people or groups |
| drainage | a system used to remove water or liquid waste |
| expedition | a journey or trip undertaken for a specific purpose |
| invasive | tending to spread |
| irrigation | the use of canals, ditches, and pipes to bring water to dry land |
| prairie | a large area of level or rolling grassland |
| reservation | an area of public land set aside for a specific purpose |