Examlex
Identify whether iron is a pure substance or mixture.
Leading Countries
Nations that are at the forefront in terms of economic, political, military, or technological development.
Legal Immigrants
Individuals who have been granted authorization by a country to live, work, or study there according to its laws.
Illegal Immigrants
Individuals who enter or reside in a country without the legal permission of the government.
Residing Continuously
Living in the same place without interruption or change of location over a period of time.
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