The phrase "demarcate it from" is correct and usable in written English.
It is typically used to signify a physical or figurative separation between two things or groups. For example, "We need to clearly demarcate this area from the rest of the store so customers know where they can and cannot go."
This surface, a boundary that clearly belongs to the entity, not only demarcates it from its complement, but also the complement from the object.
Maintenance of information rather than the bodies is the most distinctive attribute of life demarcating it from abiotic existence.
Schizoaffective disorder is better defined to demarcate it more cleanly from schizophrenia.
Ethiopia imprisoned dissidents and journalists, used food aid as a political tool, appropriated vast sections of land from its citizens and prevented the United Nations from demarcating its border with Eritrea.
Anderson et al. [ 10] suggest that this definition presents several advantages: firstly, it demarcates innovation from creativity, secondly, it conceptualises innovation as a deliberate effort, aiming at benefit, and thirdly, it highlights the relativity of novelty.
However, for such an analysis to clearly demarcate meaningfulness from happiness, it would be useful to modify it to indicate which purposes are germane to the former.
It is difficult to clearly demarcate psychoses from the class of less-severe mental disorders known as psychoneuroses (commonly called neuroses) because a neurosis may be so severe, disabling, or disorganizing in its effects that it actually constitutes a psychosis.
This raises the obvious problem: If false results can get replicated, then how do we demarcate science from pseudoscience?
This one-note coverage drives some second generation British Muslims to demarcate themselves from their fellow citizens - 'if they won't accept me, I won't accept them', they stridently declare.
Therefore, difference (b) does not cleanly demarcate genera from universal wholes.
