The first trimester is when the embryo attaches to the placenta by the umbilical cord and the placenta make contact with the uterus.
Answer:
It's normal for a baby to show his first tooth as early as four months, or a late child could be 15 months . A few babies are even born with a tooth! A child should be between two and a half years old or three years old before he/she has a full set of their teeth .
Question 7: false. it is atlanto-axial joint.
Question 8: frontal bone
I apologize if they’re wrong have a great day though!