
1) Art
Found on
https://www.crosswordclues.com/clue/arctica

Arctica was an ancient continent which formed approximately 2.5 billion years ago in the Neoarchean era. Arctica consisted of the Canadian and Siberian shields, and is now roughly situated in the Arctic around the current North Pole. == History == Arctica joined with the continents Atlantica and Nena about one billion years ago to form the superco...
Found on
http://en.wikipedia.org/wiki/Arctica
[genus] Arctica is a genus of saltwater clams, marine bivalve mollusks in the family Arcticidae. In the present day this is a monotypic genus (contains only one species), however there are a number of additional species in the fossil record. Species within the genus Arctica include Living species: Fossil species: ...
Found on
http://en.wikipedia.org/wiki/Arctica_(genus)
No exact match found.