Examlex
Describe what is meant by the term control group and explain why a well designed experiment includes a control group.
American Industrial Revolution
A period of rapid industrial growth and technological innovation in the United States during the 18th and 19th centuries that transformed the economy.
Railroad System
A transportation network consisting of tracks, stations, and vehicles (such as trains) used for moving goods and people over long distances.
Free Market Capitalism
Free Market Capitalism is an economic system characterized by private ownership of resources and businesses, where the prices of goods and services are determined in a free price system set by supply and demand.
Natural Force
These are elements of nature that can have profound effects on human activities and the environment, such as earthquakes, hurricanes, or solar radiation.
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