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Convection currents are circular currents or movement within a
liquid due to different densities of the hotter and cooler parts.
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Some countries that span both Europe and Asia include Turkey, Russia and Kazakhstan. They are called trans continental countries. Even though Europe and Asia are continents in their own rites, geographically speaking they span one landmass known as Eurasia. The landmass rests on the tectonic plate known as the Eurasian plate.
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Explanation:
The one-drop rule is a social and legal principle of racial classification that was historically prominent in the United States in the 20th century. It asserted that any person with even one ancestor of sub-Saharan African ancestry ("one drop" of black blood) is considered black (Negro or colored in historical terms).
