The Life Force of Field of Life Matter can exist without life but life to manifest matter is essential. That does not mean that the matter will, on attaining optimum condition should automatically contain life. It may also mean life that. But that may mean that until such conditioning life force will not be able to be held by matter. Or life may be in gross form in the inanimate things and gradually transform into living form when the matter gets conditioned to hold it.
Life is equated with prana in Sanskrit.
Prana is a kind of air or vayu . Along with other kinds of air namely apana , samana , udana , vyana , naga , kurma , krakara , devadatta and dhananjaya , it resides in the human body. Life is between the first and the last breath. Thus the life force is the kind of air which enters the body and makes it living. Therefore the body or shareera which is parthiva or made of earth and also water becomes living on the application of air.