On the cellular level it is synonymous with senescence, the inability to produce while still being metabolically alive.
Denharm Harmon asserts that it is caused by free radical compounds while Error Catastrophe Theory attributes it to accelerating errors in protein transcription while. Still another theory points to the Hayflick limit - a set, specific clonal lifespan. On the cellular level it is synonymous with senescence, the inability to produce while still being metabolically alive. FTP identify this process synonymous on the human level with getting older.
Denharm Harmon asserts that it is caused by free radical compounds while Error Catastrophe Theory attributes it to accelerating errors in protein transcription while.
{Aging} (accept senescence before it is mentioned and prompt on gerontology).