Posted by **Lucy** on Tuesday, September 9, 2008 at 4:59pm.

Working Backwards:

In the 1980's the Northen White Rhinoceros population decreased by 485 from what it was in the 1970s. By the 1990s the population increased 2 more than twice the population in the 1970s By the 2000s the population dropped 25 rhinoceroes to about 7 today what was the population in the 1970s

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