Water is a solvent for polar molecules and the most common solvent used by living things; all the ions and proteins in a cell are dissolved in water within a cell. solvent (from the Latin solvÅ, I loosen, untie, I solve) is a substance that dissolves a solute (a chemically different liquid, solid or gas), resulting in a solution.
An example of supporting documentation is: â UNINSURED MEDICAL EXPENSES . Evidence (itemized bills) to show what treatment was provided, when it was provided, and the charge, as well as evidence of insurance filing and payments (insurance company summary sheets or claims reports, etc.) indicating what was paid by your insurance must be included.
1 Excluding employment tax records, files relating to current employees should be retained while they are working for you and at least 7 years after a current or former employee has left or been terminated. 2  For any job applicants who were not eventually hired, keep these files for at least 3 years. If you filed for a deduction for a bad debt or worthless security, the IRS suggests you keep your supporting tax records for 7 years. 2  Under these circumstances, you may generally wish to retain your supportive records for at least 7 years. 3  Employment Tax Records.