The Role of Oyesters in Cleanning the Chesapeake Bay

What do oysters consume or shape into small packets to help purify the Chesapeake Bay?

• Plankton and algae

• Sediment and nitrogen

• Plastic and waste

• Salt and minerals

How long would it take the remaining Bay oysters to filter a volume of water equal to that of the entire Bay?

• Less than a week

• More than a year

• Exactly one year

• About a month

What is the primary cause of the Dead Zone in the Chesapeake Bay as indicated in the graphic?

• Overfishing in the bay area

• Dangerously low levels of dissolved oxygen

• Pollution from agricultural runoff

• Increase in water temperature

According to the "Effects of Nutrient Pollution in the Bay" diagram, which of the following is a consequence of excess nutrients entering the bay?

• Improved water clarity

• Decreased algae growth

• Increased oxygen levels

• Algal bloom

Based on the "Effects of Nutrient Pollution in the Bay" diagram, what is one of the effects of algal blooms on aquatic life?

• Creation of new habitats for fish

• Increased food supply for fish

• Blockage of sunlight

• Purification of water

What is the ultimate result of the nutrient pollution cycle as shown in the "Effects of Nutrient Pollution in the Bay" diagram?

• Restoration of the natural ecosystem

• Healthy aquatic plant growth

• Fish populations are enhanced

• Dead zones are created

What is an important indicator of water health in the Chesapeake Bay, as mentioned in the passage?

• The number of fish species

• The clarity of the water

• Biodiversity

• The temperature of the water

According to the passage, what are students in Baltimore City Public Schools studying?

• The history of the Chesapeake Bay

• The impact of pollution on water quality data in the Chesapeake Bay

• The economic effects of oyster harvesting

• The migration patterns of marine life in the Chesapeake Bay

Based on the infographic titled "The Bay's Decimated Oyster Population," which state's oyster landings have shown a decline over time?

• Virginia

• Maryland

• Both Virginia and Maryland

• Neither Virginia nor Maryland

Does nitrogen in the rain falling on the parking lot make it into the river?

• Yes, because the surface profile shows a slope from the parking lot towards the river, indicating that runoff would flow into the river.

• No, because the parking lot is designed to absorb all the rainwater and prevent runoff.

• Yes, because the parking lot is covered with cars, which means nitrogen does not get absorbed.

• No, because the sports field acts as a barrier and prevents any water from reaching the river.