Starting at around the age of 6, the primary teeth fall out and are replaced by permanent teeth at the rate of about __________ per year.

Name: Starting at around the age of 6, the primary teeth fall out and are replaced by permanent teeth at the rate of about __________ per year.
Brand: Quizplus
Rating: 4.8 (55 reviews)

Question

Quizplus · Accepted Answer

Starting at around the age of 6, the primary teeth start falling out and are replaced by permanent teeth. Permanent teeth replace primary teeth at the rate of about four per year starting at age 6.

Starting at Around the Age of 6, the Primary Teeth