Hearing depends on a series of events that change sound waves in the air into electrical signals. Your auditory nerve then carries these signals to your brain through a complex series of steps. Sound waves enter the outer ear and travel through a narrow passageway called the ear canal, which leads to the eardrum.
However, if your child is 21 or older and you pay him $1,700 or more during the year, you can withhold Social Security and Medicare taxes from his pay. If you choose not to withhold the taxes, you must pay your adult childâs Medicare and Social Security taxes yourself.
Monthly payments for children with no countable income are as follows: 1  Age 0 through 5 - $242 per child. 2  Age 6 through 12 - $249 per child. 3  Age 13 through 17 - $298 per child.