Organisms That once lived but don't exist today are _____.

About 200 million years ago, there were _______ on earth.

Variations occur, or ______, over time.

Closely related species have DNA that is ___.

A fern is a member of the __________.

Carolus Linnaeus created _________.

Mushroom belong to the ____________.

a genus is a larger group than a(n) _______.

Members of the archeobacteria kingdom are all ____________.

The word part eco in ecosystem means ________.

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