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Assertion:- Classification systems are c...

Assertion`:-` Classification systems are changing overynow and then.
Reason`:-` Over time, criteria for classification changed.

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The number of species that are known and described are between 1.7 to 1.8 million. Biodiverstity is not limited to the existing life forms. If we explore new areas and even old ones new organisms are continuously being added. Biologists use several principles and criteria to classify the organisms. There are several characteristic difference which help in classification. This is the reason of change in classification systems every now and then.
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