Passage I

Snow crab (Chionoecetes opilio) is a subarctic species of crab that is commercially fished in the Atlantic Ocean. Because snow crab are eaten by fish such as cod, the number of cod present in an area may affect snow crab populations. The figure below shows the mass of snow crab caught on the eastern Scotian Shelf in the Atlantic Ocean each year from 1980 through 1994. The figure also shows, for the same area, the estimated number of 1-to 3-year-old cod and the estimated number of 4- to 6-year-old cod present each year from 1980 through 1994.

4. Consider the statement “When the total estimated number of cod (including both 1- to 3-year-old cod and 4- to 6-year-old cod) was relatively high, the mass of snow crab caught was relatively low.” Are the data in the figure for 1984 through 1986 and for 1992 through 1994 consistent with this statement?

Answer and Explanation

Your Answer is

Correct Answer is F

Explanation

First of all, in the figure, we can see that the curve representing cod in 1984-1986 is relatively high, indicating that the total number of cod in these years is relatively large, and the total number of cod in 1992 to 1994 is relatively small;

< p>Secondly, I saw that the histogram representing snow crab from 1984 to 1986 was relatively short, and on the contrary, the histogram from 1992 to 1994 was relatively high, so judging from the figure, the statement in the title is basically correct