Welcome to the 1520 Perfect Dictionary
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| Biotic index | |
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| BIOTIC INDEX Definition: (Environment) A way of measuring the pollution (= dirty substances) in water, e.g. a river, by counting the organisms in it. ___________________________________ See perfect count (1). ____ See perfect method (1). See perfect measurement (1). ____ See perfect noise pollution. | |
1520 Products |
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1520 Products was established in 2005 with the purpose of entertaining and teaching us on key and important aspects of life (such as marriage, sex, etc) through the playing of games which will allow us to laugh but at the same time pass a message of what is the right or ideal way. |
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 1520 Sex Game |
 1520 Puzzles |
 1520 Marriage Game |