Examlex
Replicating in an experiment means that the number of subjects is greater than 1.
Railroads
A mode of land transportation consisting of a series of vehicles that run along railway tracks, pivotal in the industrialization process and expansion of many countries.
Time Zones
Geographic regions within which the same standard time is used.
Economic Growth
An increase in the production of goods and services in an economy over a period of time, typically measured by GDP.
Natural Resources
Materials or substances that occur in nature and can be used for economic gain, such as minerals, forests, water, and fertile land.
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