For women, there are things called "Sperms". There is an <em>egg </em>in the women. Think of colors. Say an orange sperm is a boy and a yellow sperm is a girl. If the yellow sperm reaches the egg first, the baby will be a girl. If the orange sperm reaches the egg first, the baby will be a boy. Think of it as a Sperm-race.
If two yellows, two oranges, or one of each comes to the sperm at the same time, you'll have twins.
Same with triples, quadruplets, etc, even though this is very rare.
Can I have Brainliest?
When the head rotates or tilts, the otoliths in the vestibule sacs shifts, causing the fluid in the semicircular canals to move, bending hair cells, which turn in activate neural signals and notify them about the head's position and movement. The vestibule nerve connects with the cochlear nerve to form the auditory nerve, which relays information to the brain about balance.