Answer:The insurance that pays first (primary payer) pays up to the limits of its coverage. The one that pays second (secondary payer) only pays if there are costs the primary insurer didn't cover. ... If your employer insurance is the secondary payer, you may need to enroll in Medicare Part B before your insurance will pay.
Explanation:
An experiment can be used
An amino acid is made up of atoms from several different elements. It has carbons, hydrogen, oxygen, nitrogen and sometimes sulfur atoms.
