Dead Zone Volume (10⁹ m³) 7 6 N 1 0 Figure 1: Relationship between nitrogen input and dead zone volume in the Chesapeake Bay 1950-1979 0 ❤ 5 O O O 。 30 Dead Zone Volume (10 m³) 35 7 10 s 1 0 Figure 2: Relationship between nitrogen input and dead zone volume in the Chesapeake Bay 1980-2001 0 10 15 20 25 10 15 20 25 Nitrogen Input (gigagrams per year) Nitrogen Input (gigagrams per year) Data from Hagy, James D., et al. "Hypoxia in Chesapeake Bay, 1950-2001: Long-Term Change in Relation to Nutrient Loading and River Flow." Estuaries, vol. 27, no. 4, 2004, pp. 634-58 5 • Based on Figure 1 and Figure 2, which of the following are accurate statements? There is a positive correlation between nitrogen input and dead zone volume for both time periods There is a negative correlation between nitrogen input and dead zone volume for both time periods There is no correlation between nitrogen input and dead zone volume for both time periods The dead zone was larger on average in 1980-2001 compared to 1950-1979 The dead zone was smaller on average in 1980-2001 compared to 1950-1979 There was no difference in the average size of the dead zone in 1980-2001 compared to 1950-1979 .. : 30 ● 35

Dead Zone Volume (10⁹ m³) 7 6 N 1 0 Figure 1: Relationship between nitrogen input and dead zone volume in the Chesapeake Bay 1950-1979 0 ❤ 5 O O O 。 30 Dead Zone Volume (10 m³) 35 7 10 s 1 0 Figure 2: Relationship between nitrogen input and dead zone volume in the Chesapeake Bay 1980-2001 0 10 15 20 25 10 15 20 25 Nitrogen Input (gigagrams per year) Nitrogen Input (gigagrams per year) Data from Hagy, James D., et al. "Hypoxia in Chesapeake Bay, 1950-2001: Long-Term Change in Relation to Nutrient Loading and River Flow." Estuaries, vol. 27, no. 4, 2004, pp. 634-58 5 • Based on Figure 1 and Figure 2, which of the following are accurate statements? There is a positive correlation between nitrogen input and dead zone volume for both time periods There is a negative correlation between nitrogen input and dead zone volume for both time periods There is no correlation between nitrogen input and dead zone volume for both time periods The dead zone was larger on average in 1980-2001 compared to 1950-1979 The dead zone was smaller on average in 1980-2001 compared to 1950-1979 There was no difference in the average size of the dead zone in 1980-2001 compared to 1950-1979 .. : 30 ● 35

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter54: Ecosystems And Global Change

Section: Chapter Questions

Problem 1ITD

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