Avolcano is a volcano with broad, gently sloping sides that usually build up from the floor of the sea. a. stratovolcano b. cinder cone c. shield d. all of the above

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.