Question

2. Why are the classification systems changing every now and then?
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Answer 1

Answer:

it's never changed it is updated

Explanation:

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Answer 2

Answer:

miilons of plants, animal and microorganisms found on earth ,have been identified by the scientist while many new species are still being discovered around the world. therefore, to classify these newly discovered species,with new characters ,new system of classification have to be devised every now and then .this creates the requirements to change the existing system of classification..