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o-na [289]
2 years ago
14

I need it fast as posible so fastttttt​

Biology
1 answer:
BlackZzzverrR [31]2 years ago
8 0

Answer:

I think B is baby teeth and A is permanent teeth

a) Baby teeth doesn't fall on schedule and permanent teeth come in behind them this results is two rows of teeths.

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the book stays on the shelf???

Explanation:

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