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).
Contribution limits. Taxpayers can generally make contributions to their HSA for a given tax year until the deadline for filing the individual's income tax returns for that year, which is typically April 15. All contributions to an HSA from both the employer and the employee count toward the annual maximum.