Which of the following is a scientific question? a. should commercial fisheries be regulated to protect dolphin habitats? b. are dolphins more interesting than whales? c. do dolphins emit characteristic whistles in response to their offspring? d. why don't people eat more dolphin meat?

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.