The Six Kingdoms. 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.Today the system of classification includes six kingdoms.he Six Kingdoms. 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.
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Over 25 Years of Success. Advanced Physical Therapy Center, P.C. is a physical therapy, occupational therapy, and sports medicine clinic dedicated to providing cutting edge therapy techniques and personalized, one-on-one care programs. Since 1991, APTC has distinguished itself among the providers in Grand Blanc, Flint, Clio, Hartland, Goodrich, Clarkston, and Davison.