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Question

Number of teeth in human which grow twice are


A
18
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B
14
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C
12
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D
20
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Solution

The correct option is D 20
A normal human has 20 teeth which they lose through their childhood known as deciduous teeth. They are the temporary teeth that usually begin to fall out at the age of 6 and are gradually replaced by adult teeth over a period of several years. 

Biology

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