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Wasabi, (Eutrema japonicum), plant of the mustard family (Brassicaceae) and a pungent paste made of its ground rhizomes. The plant is native to Japan, South Korea, and Sakhalin, Russia, and its cultivation is limited because of its specific growing requirements. Given the high price and limited...
Nation-state, a territorially bounded sovereign polity—i.e., a state—that is ruled in the name of a community of citizens who identify themselves as a nation. The legitimacy of a nation-state’s rule over a territory and over the population inhabiting it stems from the right of a core national group...
Tape grass, (genus Vallisneria), genus of 14 species of perennial aquatic plants of the family Hydrocharitaceae. Tape grasses grow fully submerged in fresh or brackish water and are native to temperate and tropical waters around the world. Some species—namely, straight tape grass (Vallisneria...
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