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.

2. According to the figure, When the estimated number of 1-to 3-year-old cod was the greatest, the number of metric tons of snow crab caught was closest to which of the following values?

Answer and Explanation

Your Answer is

Correct Answer is F

Explanation

Look at the curve of 1- to 3-year old cod in the figure. When the abscissa is 1981, the ordinate of this curve reaches the maximum value;

Because the number of metric ton is asked in the question stem, which is the mass of the question, so it corresponds to the ordinate on the left . The abscissa is 1981 and the ordinate of this column is about 200