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.
China was the fourth of the Early River Valley Civilization. The  two main geographical characteristics with China are rivers and  mountains. This civilization took start be â¦ tween two river systems,  the Hung He and the Yangtze. North China lies between these two  major rivers.