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.
The ability to start farming was usually tied to geography. In China, two major river basins provided the abundant resources, fertile soil, and natural defenses needed for people to safely settle down and start building small societies. These rivers were the Yellow in the north, and the Yangtze in the south.