<u>Answer:</u>
Blastocyst is a structure that subsequently forms the embryo during the process of fertilization.
<u>Explanation:</u>
- In the "innermost layer of the uterine wall" there is endometrium layer, this is where the uterus does the embryo implant.
- The blastocyst stage is the period of embedding the "lining of the uterus".
- But the fertilization of egg is done in the "Fallopian tube" and is later implanted in the uterus.
- Hence blastocyst is the lining structure of the uterus as the implantation of embryo occurs.
Oceanic is the answer for this question
The Abdominopelvic cavity Hope this helps :)
chemical formula??! do you mean O2