Excess nitrogen and phosphorus sometimes drain into waterways that flow into the Chesapeake Bay. These nutrients may cause algae blooms. Which of the following is not a likely source of these excess nutrients?

Which human activity would most likely reduce the number of algae blooms in a bay?

Data indicate that chemical pollutants contaminate 53% of the waterways that empty into the Chesapeake Bay. These chemical pollutants are found in the tissues of animals living in the bay. Which group of people who live away from the bay might be most affected by these chemical pollutants?

The map shows a site for a proposed housing development near a town. A wastewater treatment plant for the housing area will be built along the stream, between the proposed development and the landfill. The stream flows through a saltwater marsh and into a river. The river empties into an estuary, similar to the Chesapeake Bay. Natural processes have been eroding the stream banks near the proposed housing development site. How will the housing development most likely affect the stream banks?

Scientists estimate that 200 non-native organisms have been introduced into Chesapeake Bay. Which of these statements is not true about non-native organisms?

Use the information below to answer the following item. Scientists determined that excess fertilizer from farms entered a shallow lake. The fertilizer caused an increase in aquatic plants in the lake and then a decrease in oxygen in the water. Next, organic debris collected on the bottom of the lake. Over several years, the lake gradually filled in with organic sediment. Which change most likely caused this the increase in aquatic plants?

Use the information below to answer the following item. The water quality of the Chesapeake Bay is measured by the Chesapeake Bay Water Quality Monitoring Program. Scientists measure the salinity, temperature, pH, and oxygen levels to help determine the health of the Bay. Healthy water also contains appropriate amounts of nutrients. Monitoring water quality helps communities make decisions about the Bay. Which of these would likely be the most immediate result if oxygen levels in the Bay decreased by 90%?