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ACROSS
1)  an association including most countries in the western hemisphere; created in 1948 to promote military and economic and social and cultural cooperation
2)  (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information
3)  a small drink


DOWN
1)  a doctor's degree in optometry
2)  black tropical american cuckoo
3)  a watery solution of sugars, salts, and minerals that circulates through the vascular system of a plant

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