Answer :
The tree of life is a metaphor which expresses the idea that all life is related by common descent. Charles Darwin was the first to use this metaphor in modern biology. It had been used many times before for other purposes. The evolutionary tree shows the relationships among various biological groups.
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The tree of life is a metaphor and it expresses the idea that all of the life is related by common descent. Charles Darwin was known to be the first person to use this metaphor in modern biology. It was used many of times before for other purposes, just not for this. The evolutionary tree had shown that the relationships among various biological groups.