Question

Which of the following conclusions can be drawn from the data shown in the figure?

The figure shows two pie charts. The first pie chart represents distribution of nitrogen entering the Chesapeake Bay by its sources. According to the pie chart, each source accounts for the following percentage of the entering nitrogen: Agriculture fertilizer and manure account for 32 percent, Atmospheric deposition agriculture for 6 percent, Atmospheric deposition mobile, utilities, and industries for 26 percent, Atmospheric deposition natural for 1 percent, Municipal and industrial wastewater for 19 percent, Urban and suburban fertilizer runoff for 10 percent, and Septic systems for 4 percent. The second pie chart represents distribution of phosphorus entering the Chesapeake Bay by its sources. The sources account for the following percentage of the phosphorus: Agriculture fertilizer and manure for 45 percent, Natural sources for 3 percent, Municipal and industrial wastewater for 21 percent, and Urban suburban fertilizer runoff and transported sediments for 31 percent.


Which of the following conclusions can be drawn from the data shown in the figure?
Agriculture accounts for 77% of the nitrogen and phosphorus entering Chesapeake Bay.
Automobiles do not contribute to nutrient pollution in Chesapeake Bay.
Full protection of Chesapeake Bay will require consideration of activities within the bay's airshed and not just the bay's watershed.
Repairing broken septic systems will probably result in a large decrease in phosphorus pollution entering Chesapeake Bay.
Wastewater treatment plants do not contribute significantly to nutrient pollution in Chesapeake Bay.

Answer 1

the answer is the involvement of the US in the war put people to work and raised wages.

Step-by-step explanation:

Answer 2

Full protection of Chesapeake Bay will require consideration of activities within the bay's airshed and not just the bay's watershed

Step-by-step explanation:

Let's consider the options:

A) Agriculture accounts for 77% of the nitrogen and phosphorus entering Chesapeake Bay. Agriculture accounts for 45% of phosphorus and 32% of nitrogen, so cannot account for more than 45% of the pollution from these sources.

B) Automobiles do not contribute to nutrient pollution in Chesapeake Bay. 26% of nitrogen comes from atmospheric sources. Automobiles are a large contributor to atmospheric nitrogen pollutants, so it cannot be concluded that automobiles are not a contributor.

C) Full protection of Chesapeake Bay will require consideration of activities within the bay's airshed and not just the bay's watershed. Since atmospheric sources are tied with fertilizer and manure as the largest contributor of nitrogen pollution, it seems clear that addressing these sources will be required.

D) Repairing broken septic systems will probably result in a large decrease in phosphorus pollution entering Chesapeake Bay. The contribution of septic systems is 4% of the total nitrogen pollution, so eliminating that source will not have a major impact.

E) Wastewater treatment plants do not contribute significantly to nutrient pollution in Chesapeake Bay. Wastewater treatment accounts for about 20% of the pollution, so we'd have to say that is a significant source.