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.
Compared to other developing countries, China has much better infrastructure, education and literacy among the younger ppl, universities, R&D, tech giant coporations, and political influence in the world. While compared to developed nations, China is very poor on average. Average education/literacy, etc.