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Developed countries are the engines of the world economy, and they have the highest GNP as well...
People do a wide range of jobs every day. But is there a way to categorise all these jobs?
Deforestation has a negative impact on the environment.
The Panama Canal is an artificial waterway created to shorten shipping routes between the...
Space probes and Mars rovers examine the structure of Mars and possible traces of life.
Satellites orbiting the Earth can be used for civilian or military purposes.
The structure and density of farms and villages depend on the geographical features of the region.
Villages are localities with relatively small populations and only local administrative powers.