this question is from my packet for school.it has to be done by tuesday the day after 2012s labor day.so put your answer in

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When Linnaeus developed his system of classification, there were only two kingdoms, Plants and Animals. But the use of the microscope led to the discovery of new organisms and the identification of differences in cells.  A two-kingdom system was no longer useful.  So there now are six: Plants, Animals, Protists, Fungi, Archaebacteria, Eubacteria.

 

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