The auditory system changes a wide range of weak mechanical signals into a complex series of electrical signals in the central nervous system. Sound is a series of pressure changes in the air.
Itâs Not Too Late to Maximize Your 2016 HSA Contributions: Contribute Until April 17, 2017. One of the big pros of enrolling in a high-deductible health plan is that it is paired with a Health Savings Account (HSA).
Each year you can contribute dollars tax-free to your HSA up to a certain limit. The annual contribution limit for your HSA is $3,350 for an individual and $6,650 for a family. HSA holders 55 and older can contribute an extra $1,000 tax deductible dollars to their HSA, $4,350 for an individual and $7,650 for a family.