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Biologist continue classifying lifeforms further into Orders, Families, Genius, and Species. In the example below, you can see how scientists have classified the European Tree Frog. Notice that the tree frog starts out in the very broad Animal Kingdom, from there each group becomes more and more narrow, until we have only this type of frog. Also, notice that each time we move to a smaller group, the lifeforms are more similar to one another. |