Energy in an ecosystem flows directly from . a.
producers to tertiary consumers
b.
producers to secondary consumers
c.
tertiary consumers to secondary consumers
environmental science, help asap please!

a. producers to tertiary consumers

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.