Question: Explain the relationship between graph A and graph B.
Graph A shows the volumes of captured fish from 1950. You can see the captured fish volumes have increased year by year from 1,000 tones to almost 10,000 tones in the year 2006.
Compared to graph B, the quantity of adult tuna has decreased from the year 1954 through the year 2006 that is because many tuna and their relatives were caught. It means there are not many adult fish remained for increasing the numbers of fish stock as you can see in the blue circle.
Thank you.