Question

A. explain the term 1 implantation 2 placenta
B. what is the average duration of human pregnancy

Answer 1

here is ur answer

(1) Implantation : It is the process of after fertilization the attachment of the ovum to the endometrium. (11) Placenta : Placenta is the connection between mother and embryo

i hope it helps uh ✌️✌️

Answer 2

A](1) Implantation : It is the process of after fertilization the attachment of the ovum to the endometrium. (11) Placenta : Placenta is the connection between mother and embryo.

b] 9 months