From a biological standpoint, human development is a continuum, starting with the germ cells (ovum and spermatozoon), through fertilization, prenatal development, and growth to adulthood.
This is pretty neat from a biological standpoint.
From a biological standpoint that is as contra-survival as a compulsion to suicide.
But from a purely biological standpoint, death is no easier to define; indeed, medical advances and technology have only made it tougher to determine when a person is, in fact, dead.
"There's no loss from a biological standpoint because they are not breeding animals."
Thus the assessment of a "safe" concentration must be made from a biological standpoint rather than with a statistical test.
From a biological standpoint, water has many distinct properties that are critical for the proliferation of life that set it apart from other substances.
The book itself is divided into six sections: biological and anthropological standpoint, medical standpoint, health and its tests, nubility of educated women, fecundity of educated women and education.
In this, the definition of a mother is stretched from the "biological" standpoint to the "symbolic."