Final answer:
The fifth state alphabetically in the Chesapeake Bay watershed is Pennsylvania. The bay suffers from dead zones due to nutrient runoff, requiring multi-sector cooperation.
Step-by-step explanation:
The fifth state in the alphabetical listing of the six states in the Chesapeake Bay watershed is Pennsylvania. The watershed covers parts of New York, Maryland, Delaware, Pennsylvania, Virginia, and West Virginia.
The Chesapeake Bay is notable for being an ecosystem affected by nutrient runoff from agriculture and urban areas, which has led to identified dead zones and a decline in species such as clams, oysters, and worms. The bay's health is a complex issue that necessitates the cooperation of various sectors, including industry, agriculture, and homeowners.