Review the graph above. It shows the trend in the total catch of cod over 70 years. Select the best response for this change. a Cod populations have dropped to unsustainable levels, preventing the same quantities caught in the past. b Overfishing has led to cod population growing and outcompeting other fishes. c The cod catch is declining due to human population decline and less demand for food. d Cod populations have been under fished and have over-reproduced.
The best response for the change shown in the graph is option a: Cod populations have dropped to unsustainable levels, preventing the same quantities caught in the past.
This response aligns with the declining trend in the total catch of cod over 70 years. It suggests that cod populations have significantly decreased over time, reaching levels that cannot sustain the same quantities of cod caught as in the past. This decline in catch is likely a consequence of overfishing and the negative impact it has had on cod populations.