Which stretch of water is Europe's most northern boundary?

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What hormone secreted by the pancreas lowers blood glucose levels in diabetics?

What French scientist is credited with inventing margarine?

How many natural satellites does Jupiter have?

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Who played the role of Colonel Kurtz in the movie "Apocalypse Now"?

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What nation was led by Pompey the Great?

What city hosted the 1992 Summer Olympics?

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Which duo had a 1987 Christmas hit with the song "Always on My Mind"?