through the umbilical cord
If you are talking about a fortnight then, around two weeks. There is no such thing as a forth night unless you are talking about thursday.
to send messeges back and forth over long distences
A pendulum.
No. Snakes Hatch from Eggs. Bellybuttons are caused by the umbilical cord being cut off from the stomach. If you don't know what an Umbilical cord is, it's like a straw that sucks nutrients from a baby's mother.
In a frictionless pendulum, the total mechanical energy (the sum of potential and kinetic energy) remains constant. This means that as the pendulum swings back and forth, the energy is continuously exchanged between potential and kinetic energy, but the total amount of energy remains the same.
Oprah got switched back and forth between her mother and father. She did that because her parents aren't married anymore.
No
The Antonine Wall is between Firth of Forth and Firth of Clyde.
The children of your mother's first cousins are your second cousins. The children of your mother's second cousins are your third cousins. The children of your mother's third cousins are your fourth cousins. And so forth.
Your mother's first cousin's son is your second cousin. Your mother's second cousin's son is your third cousin. And so forth.
The children of your mother's first cousins are your second cousins. The children of your mother's second cousins are your third cousins. And so forth.
Your parent's first cousin is your first cousin once-removed . Your parent's second cousin is your second cousin, once removed. And so forth...
Fourth is like the number 4. Forth is to go forward.
Material with low conductance such as rubber, plastics and so forth.
Cneajna of Moldavia was the mother of Vlad Tepes.
The children of your mother's first cousins are your second cousins. The children of your mother's second cousins are your third cousins. And so forth.
Yes, a subtle one. We might use back and forth to refer to a conversation between people, but to and fro would not be used that way.