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2. Why are the classification systems changing every now and then?

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Earth is a home for numerous species of plants, animals and microbes. The exact count of these life forms is still unknown. Scientists have discovered many species present on Earth. These have been properly named and classified as per the existing classification systems. However, there are still so many species to be discovered. Whenever new species are discovered the classification systems are modified according to the requirements.  Therefore, the classification systems are always dynamic and they keep on changing as per the needs.

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