Yes, but its incredibly rare. It means that her body would have to have released an egg again during her current pregnancy via ovulation. I’ve only ever heard of very few cases that its ever happened to.
Yes, but not monozygotic twins. There are cases where a woman was impregnated by two (or more?) men very close in time to each other, and two ova were fertilized by different men. In that case black and white twins are quite possible.
Not at the same time to create a single baby. But it is possible that if the woman has two eggs then two different men can fertilize them, resulting in fraternal twins that are half-brothers.
No.
it means that different people can do the same thing at the same time
They both dressed as men, they both built many monuments, and they both ruled in the New Kingdom.
Two places in different hemispheres can have the same time if they are both in the same time zone. Time zones are defined by a range of longitudes, so places within that range will have the same time despite being in different hemispheres.
You can certainly have your feet in two different countries at the same time.
Every woman is a little different in this matter, but the average is about 28 days. That's not quite one calendar month, so a woman's periods will generally NOT correspond with the same day of each 30- or 31-day calendar month.
When you are over 21
Between 4-10 days. It's different for every woman.
the sun sets at the same time
No, you cannot insure a car with two different policies at the same time.