<p style="text-align: left;">The title of this book is "What are these body parts for?"<br>Our body parts play many important roles. However, some of our parts seem useless.<br>Our ancestors had tails. These helped them keep their balance. But we don't have tails anymore.<br>Human started to eating softer foods. So their jaws grandually became smaller. <br>Wisdom teeth are usually removed because we don't have enough space in our mouths.<br>Humans started living in less dusty places. So their third eyelid became smaller and stopped moving.</p>
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첫댓글 The title of this book is "What are these body parts for?" Our body parts play many important roles. However, some of our parts seem useless. Our ancestors had tails. These helped them keep their balance. But we don't have tails anymore. Humans started to eat softer foods. So their jaws gradually became smaller. Wisdom teeth are usually removed because we don't have enough space in our mouths. Humans started living in less dusty places. So their third eyelid became smaller and stopped moving.
첫댓글
The title of this book is "What are these body parts for?"
Our body parts play many important roles. However, some of our parts seem useless.
Our ancestors had tails. These helped them keep their balance. But we don't have tails anymore.
Humans started to eat softer foods. So their jaws gradually became smaller.
Wisdom teeth are usually removed because we don't have enough space in our mouths.
Humans started living in less dusty places. So their third eyelid became smaller and stopped moving.