Gap Fill - Human Teeth - Level 1


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   ancestral      deep      findings      jawbones      mirror      one      origin      researcher      tree      vertebrates  

Paragraph 2

The fish was of the earliest jawed with teeth. A researcher said: "[Our] change our whole understanding of the of teeth." He said: "Their ...seem to be directly to our own. When you grin at the bathroom in the morning, the teeth that grin back at you can [follow] their origins right back to [that fish]." Another said: "Nobody expected to find teeth so on the evolutionary ."

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