WHY DO SCIENTISTS CONTINUE TO ADD NEW KINGDOMS TO THEIR SYSTEM OF CLASSIFICATION?

Scientists continue to add new kingdom to the system of classification because with the passage of time new organisms are discovered which have unique properties. These organisms donot fit to place in kingdom of classification. For example, protists are the organisms having both plants and animals characteristics so it cannot be placed into plants or animals kingdom so scientists make a new kingdom named protista.

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully