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A proposed mechanism for reducing total global greenhouse gases in which each country would be assigned the right to emit a certain quantity of carbon dioxide, according to its population size, setting the total at an acceptable global standard.
Streams of air that originate in semipermanent highpressure cells on the margins of the tropics and are attracted equator ward by a semipermanent low-pressure cell.
A railroad that would eventually link Moscow to the Pacific port of Vladivostok. Built between 1891 and 1903.
A region that consists of the republics of Armenia, Azerbaijan, and Georgia. Located between the Caucasus mountains and the borders of Turkey and Iran.
The movement of pastoral nomads and their herd animals between low-elevation winter pastures and high-elevation summer pastures.