It can be a challenge to distinguish allergic symptoms from dry eye symptoms. Treating a patient who presents with concurrent allergy and dry eye symptoms, however, can be an even greater challenge.
User: how did chinas physical geography affect the development of its early civilizationWeegy: Chinas physical geography affected the development of its early civilization, because they were not close to any other countires, so they did not know to trade with other countries or did not know any other cultures.
A) Subsequent: Boundary evolved as the cultural landscape of an area took shape. Example: The border between China and Vietnam was the result of a long term process of adjustment and modification. Antecedent: Certain boundaries were defined and delimited before the present-day human landscape was developed.