The more commonly used light-year is also presently defined to be equal to precisely 7007315576000000000â 31557600 light-seconds, since the definition of a year is based on a Julian year (not Gregorian year) of exactly 365.25 days, each of exactly 7004864000000000000â 86400 SI seconds.
Keystone resource a component of the environment utilized by individuals in the ecological community without which the individuals would not thrive or without which the ecological community structure would be negatively effected. Kin selection
This keystone bridges the gap between Medicare coverage and a more robust health insurance plan for many senior citizens in the Keystone State. Keystone Health Plan Central provides health insurance products and related administrative services in central Pennsylvania and the Lehigh Valley. Its network includes more than 7,000 health care providers. Keystone Health Plan Central's key products also include SeniorBlue, an Medicare Advantage HMO insurance plan that provides supplemental coverage to Medicare, and CHIP, which provides low-cost insurance to uninsured children. The company is a subsidiary of Capital BlueCross.