Answer:
the mucous membrane lining the uterus, which thickens during the menstrual cycle in preparation for possible implantation of an embryo.
Explanation:
i tried
They could have been exited and scared that there baby is getting older.
Answer:
That would depend on your interests and skils
I would say all of the above, because all of those seem to be true
-hope it helps :3
Gravity and Inertia is the answer
