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.
As in Egypt, Mesopotamia, and along the Indus River, Chinese civilization began within a major river valley. Modern China itself is a huge geographical expanse. Around 4000 BCE, this huge area contained an almost infinite number of ethnic groups and languages. This history, in which a vast area populated by diverse ethnic