In her book Other-Worldly: Making Chinese Medicine through Transnational Frames (2009), medical anthropologist Mei Zhan identifies key historical moments that have affected the contemporary practice of Chinese medicine. Identify whether or not these historical events shaped contemporary Chinese medicine.

poor water quality affects most estuarine organisms, including commercially important fish and shellfish. the pollutants that have the greatest impact on the health of estuaries include toxic substances like chemicals and heavy metals, nutrient pollution (or eutrophication), and pathogens such as bacteria or viruses.

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.